Question

the ratio of the ages of Arun and Atul is 2:3 if the age of Atul is 21 years what is the age of Arun

Answer 1

let Arun's age be 2x.
Atul's age = 3x.
atul's age=21 years. so,
3x=21.
x=21/3=7 years.
Arun's age
=2x =2*7
=14 yrs.

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Answer 2

2:3::x:21 (Arun's age is x)
x = 21/3 × 2
= 14

Arun is 14 years old.

iv. y = -10

v. profit 200/1000 = 20%

vi. (10-20)

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