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)  

 Swathi 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)  

 Selvanayaki 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)  

 Nandini 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)  

 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:_______________




5)  

 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:_______________




6)  

 Haritha 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)  

 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:_______________




8)  

 Tamilselvi 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)  

 Mithra 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)  

 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:_______________




 

1)  

 Swathi 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)  

 Selvanayaki 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)  

 Nandini 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)  

 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

 



5)  

 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

 



6)  

 Haritha 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)  

 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

 



8)  

 Tamilselvi 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)  

 Mithra 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)  

 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