1.

Nisha is 15 years elder to Romi. if 5 years ago Nisha was 3 times as old as Romi, then find present age of nisha​

Answer»

age of Romi be y

Nisha is 15 years elder than Romi = (y + 15). So Nisha's age 5 years AGO = (y + 15 – 5).

Romi's age before 5 years = (y – 5)

5 years ago, Nisha is 3 times as old as Romi

(y + 15 – 5) = 3 (y – 5)

(y + 10) = (3y – 15)

2y = 25 ⇒ y = 12.5

Romi's age = 12.5 years

Nisha's age = (y + 15) = (12.5 + 15) = 27.5 years.

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