One year ago the ratio of Anil’s and Sunil’s age was 6:7. Four years hence their ratio would become 7:8. How old is Sunil?

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answer is A.

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Detailed Solution

Concept: Find the relationship between Anil and Sunil's ages from a year ago. Similarly, after 4 years, determine the relationship between their ages. In order to solve, substitute the values.
Let us assume Anil’s age as

and Sunil’s age as

ratio of their age one year ago was 6:7

Thus we can write it as,
Question Image

In this way, we established the age relationship between Anil and Sunil a year ago.
after 4 years the ratio of their ages becomes

Thus their age after 4 years

The ratio of Anil and Sunil after four years is 7:8

The preceding expression can be written as,

Cross multiply and put

So, a year ago, Anil and Sunil were 30 and 35 years old.
So, the present age of Anil

Present age of Sunil

Hence, the correct answer is option 1.

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