Q. Rajeev's age after 15 years will be 5 times his age 5 years back. What is the present age of rajeev?
✅ Correct Answer: (A)
10
Explanation: Let Rajeev's present age be x years.
Rajeev's age after 15 years = (x + 15) years.
Rajeev's age 5 years back = (x - 5) years
Then ATQ,
x + 15 = 5 (x - 5)
x + 15 = 5x - 25
=> x = 10
Hence, Rajeev's present age = x = 10 years.
Rajeev's age after 15 years = (x + 15) years.
Rajeev's age 5 years back = (x - 5) years
Then ATQ,
x + 15 = 5 (x - 5)
x + 15 = 5x - 25
=> x = 10
Hence, Rajeev's present age = x = 10 years.
Explanation by: Vaibhav Shukla
Let Rajeev's present age be x years.
Rajeev's age after 15 years = (x + 15) years.
Rajeev's age 5 years back = (x - 5) years
Then ATQ,
x + 15 = 5 (x - 5)
x + 15 = 5x - 25
=> x = 10
Hence, Rajeev's present age = x = 10 years.
Rajeev's age after 15 years = (x + 15) years.
Rajeev's age 5 years back = (x - 5) years
Then ATQ,
x + 15 = 5 (x - 5)
x + 15 = 5x - 25
=> x = 10
Hence, Rajeev's present age = x = 10 years.