Lakshya Education MCQs

Question:

The present ages of three persons are in proportions 4 : 7 :9 Eight years ago , the sum of their ages was 56 . Find their present ages.

Options:
A. 8 , 20 , 28
B.16 , 28 , 36
C.20 , 35 , 45
D.none of these
Answer: Option B

1 Comments

Sherin

8 years ago a+b+c = 56
After 8 years a+b+c = 56+ (3*8)
a+b+c = 80
From ratio , a:b = 4:7 , a= 4b/7
Similarly c= 9b/7
Substitute in eqn (1)
4b/7 + b + 9b/7 = 80
b= 28 a= 16 c = 36
Date : 2017-08-08 10:49:40

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More Questions on This Topic :

Question 1.

Hitesh is 40 year old and ronnie is 60 years old . How many years ago was the ratio of their ages 3 : 5 ?

Options:
  1.    5 years
  2.    10 years
  3.    15 years
  4.    20 years
Answer: Option B
Question 2.

The total of the ages of Jayant , Prem  andSaransh is 93 years . Ten years ago , the ratio of their ages was 2 : 3 : 4 . What is the present age of Saransh?

Options:
  1.    34 years
  2.    36 years
  3.    38 years
  4.    40 years
Answer: Option C
Question 3.

Present ages of Sameer and Anand  are in the ratio 5: 4 respectively. Three years hence , the ratio of their ages will become 11: 9 respectively . What is anand’s present age in year.

Options:
  1.    22
  2.    24
  3.    26
  4.    none of these
Answer: Option B
Question 4.

  1. The ratio of the ages of a man and his wife is 4 : 3 After 4 years, this ratio will be 9 : 7 if at the time of marriage, the ratio was 5 : 3 , then how many years ago were they married ?

Options:
  1.    10 years
  2.    12 years
  3.    14 years
  4.    16 years
Answer: Option B
Question 5.

  1. Ten year ago , A was half B in age . If the ratio of their present ages is 3 : 4 , what  will be the total of their present ages.



 

Options:
  1.    20 years
  2.    25 years
  3.    30 years
  4.     none of these
Answer: Option D
Question 6.

  1. A man is 24 years older than his son. In two years, his age will be twice the age of his son. Find the present age of the son  .



 

Options:
  1.    18 years
  2.    20 years
  3.    22 years
  4.    24 years
Answer: Option C