Beena is 3 years younger than Deepa but one year older than Roshan. Roshan is one year older than Gulshan but 4 years younger than Deepa. Deepa is 15 years old. What is the age of Gulshan in years?

Options

A. 12
B. 13
C. 11
D. 10

Answer

D

Explanation

Let Beena.s age = B, Deepa.s age =D,
Roshan.s age =R and Gulshan.s age = G
According to the question
`B = D - 3 ...(i)`
`B = R + 1...(ii)`
`R = G + 1 ... (iii) `
`R = D - 4... (iv) `
`because D= 15` (Given)
So, `R=15 - 4 = 11 `[from (iv)]
`B = 11 + 1 = 12 `[from (ii)]
`G=R-1 = 11 - 1 = 10` [from (iii)]
Therefore, required age of Gulshan = G = 10 years.