Question

The ratio of the present ages of chand and dinesh is 6:x.after seven years the age of dinesh will be 40 years.the sum of their ages three years ago was 45 years.what is the value of x?

Answer 1

Answer:

11

Step-by-step explanation:

6 : x ----> let "a" be the the age unit of present age, then

present ages are "6a" and "xa"

3 years ago:

(6a - 3) + (xa - 3) = 45 ----> 6a + xa = 51

from another given info: in 7 years from present

xa + 7 = 40 , xa = 33

and now 6a + 33 = 51 ---> a = 3 then x = 11