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)
Selvan is as old as his elder sister now. In 21 years' time, the ratio of his age to his elder sister's age will be 4:5. How old is Selvan now
years old
Answer:_______________
2)
Prem is as old as his teacher now. In 11 years' time, the ratio of his age to his teacher's age will be 2:3. How old is Prem now
years old
Answer:_______________
3)
Chidambaram is as old as his neighbour now. In 27 years' time, the ratio of his age to his neighbour's age will be 3:4. How old is Chidambaram now
years old
Answer:_______________
4)
Murugan is as old as his cousin now. In 9 years' time, the ratio of his age to his cousin's age will be 2:3. How old is Murugan now
years old
Answer:_______________
5)
Barathan is as old as his elder brother now. In 30 years' time, the ratio of his age to his elder brother's age will be 3:4. How old is Barathan now
years old
Answer:_______________
6)
Barathan is as old as his elder sister now. In 35 years' time, the ratio of his age to his elder sister's age will be 4:5. How old is Barathan now
years old
Answer:_______________
7)
Kalai is as old as his teacher now. In 15 years' time, the ratio of his age to his teacher's age will be 2:3. How old is Kalai now
years old
Answer:_______________
8)
Narayanan is as old as his neighbour now. In 24 years' time, the ratio of his age to his neighbour's age will be 3:4. How old is Narayanan now
years old
Answer:_______________
9)
Chidambaram is as old as his cousin now. In 15 years' time, the ratio of his age to his cousin's age will be 2:3. How old is Chidambaram now
years old
Answer:_______________
10)
Pugal is as old as his elder brother now. In 30 years' time, the ratio of his age to his elder brother's age will be 3:4. How old is Pugal now
years old
Answer:_______________
1)
Selvan is as old as his elder sister now. In 21 years' time, the ratio of his age to his elder sister's age will be 4:5. How old is Selvan now
Answer: 3 years old
SOLUTION 1 :
Present
Selvan
:
Elder sis
:
Difference
1
:
3
:
2
21 years' time
Selvan
:
Elder sis
:
Difference
4x2
:
5x2
:
1x2
8
:
10
:
2
Step 1:
8 units - 1 unit
= 7 units
Step 2:
7 units
= 21
1 unit
= 21 ÷ 7
= 3 years' old
2)
Prem is as old as his teacher now. In 11 years' time, the ratio of his age to his teacher's age will be 2:3. How old is Prem now
Answer: 33 years old
SOLUTION 1 :
Present
Prem
:
Teacher
:
Difference
3
:
5
:
2
11 years' time
Prem
:
Teacher
:
Difference
2x2
:
3x2
:
1x2
4
:
6
:
2
Step 1:
4 units - 3 units
= 1 unit
Step 2:
1 unit
= 11
3 units
= 3 x 11
= 33 years' old
3)
Chidambaram is as old as his neighbour now. In 27 years' time, the ratio of his age to his neighbour's age will be 3:4. How old is Chidambaram now
Answer: 27 years old
SOLUTION 1 :
Present
Chidambaram
:
Neighbour
:
Difference
3
:
5
:
2
27 years' time
Chidambaram
:
Neighbour
:
Difference
3x2
:
4x2
:
1x2
6
:
8
:
2
Step 1:
6 units - 3 units
= 3 units
3 units
= 27 years' old
4)
Murugan is as old as his cousin now. In 9 years' time, the ratio of his age to his cousin's age will be 2:3. How old is Murugan now
Answer: 3 years old
SOLUTION 1 :
Present
Murugan
:
Cousin
:
Difference
1
:
3
:
2
9 years' time
Murugan
:
Cousin
:
Difference
2x2
:
3x2
:
1x2
4
:
6
:
2
Step 1:
4 units - 1 unit
= 3 units
Step 2:
3 units
= 9
1 unit
= 9 ÷ 3
= 3 years' old
5)
Barathan is as old as his elder brother now. In 30 years' time, the ratio of his age to his elder brother's age will be 3:4. How old is Barathan now
Answer: 6 years old
SOLUTION 1 :
Present
Barathan
:
Elder brother
:
Difference
1
:
3
:
2
30 years' times
Barathan
:
Elder brother
:
Difference
3x2
:
4x2
:
1x2
6
:
8
:
2
Step 1:
6 units - 1 unit
= 5 units
Step 2:
5 units
= 30
1 unit
= 30 ÷ 5
= 6 years' old
6)
Barathan is as old as his elder sister now. In 35 years' time, the ratio of his age to his elder sister's age will be 4:5. How old is Barathan now
Answer: 5 years old
SOLUTION 1 :
Present
Barathan
:
Elder sis
:
Difference
1
:
3
:
2
35 years' time
Barathan
:
Elder sis
:
Difference
4x2
:
5x2
:
1x2
8
:
10
:
2
Step 1:
8 units - 1 unit
= 7 units
Step 2:
7 units
= 35
1 unit
= 35 ÷ 7
= 5 years' old
7)
Kalai is as old as his teacher now. In 15 years' time, the ratio of his age to his teacher's age will be 2:3. How old is Kalai now
Answer: 45 years old
SOLUTION 1 :
Present
Kalai
:
Teacher
:
Difference
3
:
5
:
2
15 years' time
Kalai
:
Teacher
:
Difference
2x2
:
3x2
:
1x2
4
:
6
:
2
Step 1:
4 units - 3 units
= 1 unit
Step 2:
1 unit
= 15
3 units
= 3 x 15
= 45 years' old
8)
Narayanan is as old as his neighbour now. In 24 years' time, the ratio of his age to his neighbour's age will be 3:4. How old is Narayanan now
Answer: 24 years old
SOLUTION 1 :
Present
Narayanan
:
Neighbour
:
Difference
3
:
5
:
2
24 years' time
Narayanan
:
Neighbour
:
Difference
3x2
:
4x2
:
1x2
6
:
8
:
2
Step 1:
6 units - 3 units
= 3 units
3 units
= 24 years' old
9)
Chidambaram is as old as his cousin now. In 15 years' time, the ratio of his age to his cousin's age will be 2:3. How old is Chidambaram now
Answer: 5 years old
SOLUTION 1 :
Present
Chidambaram
:
Cousin
:
Difference
1
:
3
:
2
15 years' time
Chidambaram
:
Cousin
:
Difference
2x2
:
3x2
:
1x2
4
:
6
:
2
Step 1:
4 units - 1 unit
= 3 units
Step 2:
3 units
= 15
1 unit
= 15 ÷ 3
= 5 years' old
10)
Pugal is as old as his elder brother now. In 30 years' time, the ratio of his age to his elder brother's age will be 3:4. How old is Pugal now