12 year old Manick is three times as old as his brother Rahul. How old will Mani

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Question
12 year old Manick is three times as old as his brother Rahul. How old will Manick be when he is twice as old as Rahul?
Options
A. 14 years
B. 16 years
C. 18 years
D. 20 years

Correct Answer

16 years

Explanation

Manick's present age = 12 years, Rahul's present age = 4 years.

Let Manick be twice as old as Rahul after x years from now.

Then, 12 + x = 2 (4 + x) ⟺ 12 + x = 8 + 2x ⟺ x = 4.

Hence, Manick's required age = 12 + x = 16 years.

Arithmetic Reasoning problems

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1. A shepherd had 17 sheep. All but nine died. How many was he left with?
Options
A. Nil
B. 8
C. 9
D. 17

2. In a family, the father took 1/4 of the cake and he had 3 times as much as each of the other members had. The total number of family members is
Options
A. 3
B. 7
C. 10
D. 12

3. In a class of 60 students, the number of boys and girls participating in the annual sports is in the ratio 3 : 2 respectively. The number of girls not participating in the sports is 5 more than the number of boys not participating in the sports. If the number of boys participating in the sports is 15, then how many girls are there in the class?
Options
A. 20
B. 25
C. 30
D. Data inadequate
E. None of these

4. A bus starts from city X. The number of women in the bus is half of the number of men. In city Y, 10 men leave the bus and five women enter. Now, number of men and women is equal. In the beginning, how many passengers entered the bus?
Options
A. 15
B. 30
C. 36
D. 45

5. A pineapple costs Rs. 7 each. A watermelon costs Rs. 5 each. X spends Rs. 38 on these fruits. The number of pineapples purchased is
Options
A. 2
B. 3
C. 4
D. Data inadequate

6. In a city, 40% of the adults are illiterate while 85% of the children are literate. If the ratio of the adults to that of the children is 2 : 3, then what percent of the population is literate?
Options
A. 20%
B. 25%
C. 50%
D. 75%

7. A waiter's salary consists of his salary and tips. During one week his tips were 5/4 of his salary. What fraction of his income came from tips?
Options
A. 4/9
B. 5/4
C. 5/8
D. 5/9

8. Two bus tickets from city A to B and three tickets from city A to C cost Rs. 77 but three tickets from city A to B and two tickets from city A to C cost Rs. 73. What are the fares for cities B and C from A?
Options
A. Rs. 4, Rs. 23
B. Rs. 13, Rs. 17
C. Rs. 15, Rs. 14
D. Rs. 17, Rs. 13

9. If 100 cats kill 100 mice in 100 days, then 4 cats would kill 4 mice in how many days?
Options
A. 1 day
B. 4 days
C. 40 days
D. 100 days

10. A man has Rs. 480 in the denominations of one-rupee notes, five-rupee notes and ten-rupee notes. The number of notes of each denomination is equal. What is the total number of notes that he has?
Options
A. 45
B. 60
C. 75
D. 90

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