Scroll:Life mathematics >> profit and loss >> saq (4314)

Written Instructions:

For each Multiple Choice Question (MCQ), four options are given. One of them is the correct answer. Make your choice (1,2,3 or 4). Write your answers in the brackets provided..

For each Short Answer Question(SAQ) and Long Answer Question(LAQ), write your answers in the blanks provided.

Leave your answers in the simplest form or correct to two decimal places.


 

1)  

 Savithri invested a sum of 12000 at 5% p.a. at compound interest.she received on amount of 13230 after n years. find the value of 'n'


Answer:_______________




2)  

 Jeevini invested a sum of 12000 at 5% p.a. at compound interest.she received on amount of 13230 after n years. find the value of 'n'


Answer:_______________




3)  

 Poongodi invested a sum of 12000 at 5% p.a. at compound interest.she received on amount of 13230 after n years. find the value of 'n'


Answer:_______________




4)  

 Chithra invested a sum of 12000 at 5% p.a. at compound interest.she received on amount of 13230 after n years. find the value of 'n'


Answer:_______________




5)  

 Pavi invested a sum of 12000 at 5% p.a. at compound interest.she received on amount of 13230 after n years. find the value of 'n'


Answer:_______________




6)  

 Poovazhagi invested a sum of 12000 at 5% p.a. at compound interest.she received on amount of 13230 after n years. find the value of 'n'


Answer:_______________




7)  

 Thamarai invested a sum of 12000 at 5% p.a. at compound interest.she received on amount of 13230 after n years. find the value of 'n'


Answer:_______________




8)  

 Kumutha invested a sum of 12000 at 5% p.a. at compound interest.she received on amount of 13230 after n years. find the value of 'n'


Answer:_______________




9)  

 Indra invested a sum of 12000 at 5% p.a. at compound interest.she received on amount of 13230 after n years. find the value of 'n'


Answer:_______________




10)  

 Chellamal invested a sum of 12000 at 5% p.a. at compound interest.she received on amount of 13230 after n years. find the value of 'n'


Answer:_______________




 

1)  

 Savithri invested a sum of 12000 at 5% p.a. at compound interest.she received on amount of 13230 after n years. find the value of 'n'

Answer: 2


SOLUTION 1 :

     P     =     12000

     r       =    5%

     A      =    13230

      n     =  

 W.K.T,

      A     =   P[ 1+(r100) ]n

     13230   =  12000[ 1+(5100) ]n   

                 =  12000[1+0.05]n

                 =   12000x (1.05)n

1323012000 = (1.05)n

   (1.1025)2    = (1.05)n

(1.05)2 = (1.05)n

Since the bases are same, equating the powers both the sides, We get, n = 2 years

n = 2

 



2)  

 Jeevini invested a sum of 12000 at 5% p.a. at compound interest.she received on amount of 13230 after n years. find the value of 'n'

Answer: 2


SOLUTION 1 :

     P     =     12000

     r       =    5%

     A      =    13230

      n     =  

 W.K.T,

      A     =   P[ 1+(r100) ]n

     13230   =  12000[ 1+(5100) ]n   

                 =  12000[1+0.05]n

                 =   12000x (1.05)n

1323012000 = (1.05)n

   (1.1025)2    = (1.05)n

(1.05)2 = (1.05)n

Since the bases are same, equating the powers both the sides, We get, n = 2 years

n = 2

 



3)  

 Poongodi invested a sum of 12000 at 5% p.a. at compound interest.she received on amount of 13230 after n years. find the value of 'n'

Answer: 2


SOLUTION 1 :

     P     =     12000

     r       =    5%

     A      =    13230

      n     =  

 W.K.T,

      A     =   P[ 1+(r100) ]n

     13230   =  12000[ 1+(5100) ]n   

                 =  12000[1+0.05]n

                 =   12000x (1.05)n

1323012000 = (1.05)n

   (1.1025)2    = (1.05)n

(1.05)2 = (1.05)n

Since the bases are same, equating the powers both the sides, We get, n = 2 years

n = 2

 



4)  

 Chithra invested a sum of 12000 at 5% p.a. at compound interest.she received on amount of 13230 after n years. find the value of 'n'

Answer: 2


SOLUTION 1 :

     P     =     12000

     r       =    5%

     A      =    13230

      n     =  

 W.K.T,

      A     =   P[ 1+(r100) ]n

     13230   =  12000[ 1+(5100) ]n   

                 =  12000[1+0.05]n

                 =   12000x (1.05)n

1323012000 = (1.05)n

   (1.1025)2    = (1.05)n

(1.05)2 = (1.05)n

Since the bases are same, equating the powers both the sides, We get, n = 2 years

n = 2

 



5)  

 Pavi invested a sum of 12000 at 5% p.a. at compound interest.she received on amount of 13230 after n years. find the value of 'n'

Answer: 2


SOLUTION 1 :

     P     =     12000

     r       =    5%

     A      =    13230

      n     =  

 W.K.T,

      A     =   P[ 1+(r100) ]n

     13230   =  12000[ 1+(5100) ]n   

                 =  12000[1+0.05]n

                 =   12000x (1.05)n

1323012000 = (1.05)n

   (1.1025)2    = (1.05)n

(1.05)2 = (1.05)n

Since the bases are same, equating the powers both the sides, We get, n = 2 years

n = 2

 



6)  

 Poovazhagi invested a sum of 12000 at 5% p.a. at compound interest.she received on amount of 13230 after n years. find the value of 'n'

Answer: 2


SOLUTION 1 :

     P     =     12000

     r       =    5%

     A      =    13230

      n     =  

 W.K.T,

      A     =   P[ 1+(r100) ]n

     13230   =  12000[ 1+(5100) ]n   

                 =  12000[1+0.05]n

                 =   12000x (1.05)n

1323012000 = (1.05)n

   (1.1025)2    = (1.05)n

(1.05)2 = (1.05)n

Since the bases are same, equating the powers both the sides, We get, n = 2 years

n = 2

 



7)  

 Thamarai invested a sum of 12000 at 5% p.a. at compound interest.she received on amount of 13230 after n years. find the value of 'n'

Answer: 2


SOLUTION 1 :

     P     =     12000

     r       =    5%

     A      =    13230

      n     =  

 W.K.T,

      A     =   P[ 1+(r100) ]n

     13230   =  12000[ 1+(5100) ]n   

                 =  12000[1+0.05]n

                 =   12000x (1.05)n

1323012000 = (1.05)n

   (1.1025)2    = (1.05)n

(1.05)2 = (1.05)n

Since the bases are same, equating the powers both the sides, We get, n = 2 years

n = 2

 



8)  

 Kumutha invested a sum of 12000 at 5% p.a. at compound interest.she received on amount of 13230 after n years. find the value of 'n'

Answer: 2


SOLUTION 1 :

     P     =     12000

     r       =    5%

     A      =    13230

      n     =  

 W.K.T,

      A     =   P[ 1+(r100) ]n

     13230   =  12000[ 1+(5100) ]n   

                 =  12000[1+0.05]n

                 =   12000x (1.05)n

1323012000 = (1.05)n

   (1.1025)2    = (1.05)n

(1.05)2 = (1.05)n

Since the bases are same, equating the powers both the sides, We get, n = 2 years

n = 2

 



9)  

 Indra invested a sum of 12000 at 5% p.a. at compound interest.she received on amount of 13230 after n years. find the value of 'n'

Answer: 2


SOLUTION 1 :

     P     =     12000

     r       =    5%

     A      =    13230

      n     =  

 W.K.T,

      A     =   P[ 1+(r100) ]n

     13230   =  12000[ 1+(5100) ]n   

                 =  12000[1+0.05]n

                 =   12000x (1.05)n

1323012000 = (1.05)n

   (1.1025)2    = (1.05)n

(1.05)2 = (1.05)n

Since the bases are same, equating the powers both the sides, We get, n = 2 years

n = 2

 



10)  

 Chellamal invested a sum of 12000 at 5% p.a. at compound interest.she received on amount of 13230 after n years. find the value of 'n'

Answer: 2


SOLUTION 1 :

     P     =     12000

     r       =    5%

     A      =    13230

      n     =  

 W.K.T,

      A     =   P[ 1+(r100) ]n

     13230   =  12000[ 1+(5100) ]n   

                 =  12000[1+0.05]n

                 =   12000x (1.05)n

1323012000 = (1.05)n

   (1.1025)2    = (1.05)n

(1.05)2 = (1.05)n

Since the bases are same, equating the powers both the sides, We get, n = 2 years

n = 2