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Verbal Reasoning - Arithmetic Reasoning

Exercise : Arithmetic Reasoning - Section 2
6.
A father tells his son, "I was of your present age when you were born". If the father is 36 now, how old was the boy five years back ?
13
15
17
20
Answer: Option
Explanation:

Let the father's age be x and the son's age be y.

Then, x - y = y or x = 2y,

Now, x = 36. So, 2y = 36 or y = 18.

Therefore Son's present age = 18 years.

So, son's age 5 years ago = 13 years.

7.
A fires 5 shots to B's 3 but A kills only once in 3 shots while B kills once in 2 shots. When B has missed 27 times, A has killed
30 birds
60 birds
72 birds
90 birds
Answer: Option
Explanation:

8.
In a class, 3/5 of the students are girls and rest are boys. If 2/9 of the girls and 1/4 of the boys are absent, what part of the total number of students is present ?
17/25
18/49
23/30
23/36
Answer: Option
Explanation:

9.
In a family, a couple has a son and a daughter. The age of the father is three times that of his daughter and the age of the son is half of that of his mother. The wife is 9 years younger to her husband and the brother is seven years older than his sister. What is the age of the mother ?
40 years
45 years
50 years
60 years
Answer: Option
Explanation:

Let the daughter's age be x years.

Then, father's age = (3x) years.

Mother's age = (3x - 9) years; Son's age = (x + 7) years.

So, x + 7 = (3x-9)/2 2x + 14 = 3x - 9 x = 23.

Therefore Mother's age = (3X - 9) = (69 - 9) years = 60 years.

10.
If a 1 mm thick paper is folded so that the area is halved at every fold, then what would be the thickness of the pile after 50 folds ?
100 km
1000 km
1 million km
1 billion km
Answer: Option
Explanation:

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