Shravan is ten years older than gaurav’s age. five years ago, one –seventh of shravan’s age was equal to one- fifth of gaurav’s age. find their present ages.

Shravan's age is 40 years old

Gaurav’s age is 30 years old

Step-by-step explanation:

Let

x> Shravan's age

y> Gaurav’s age

we know that

x=y+10 > equation A

(1/7)(x-5)=(1/5)(y-5) > equation B

substitute equation A in equation B and solve for y

(1/7)(y+10-5)=(1/5)(y-5)

(1/7)(y+5)=(1/5)(y-5)

5(y+5)=7(y-5)

5y+25=7y-35

7y-5y=25+35

2y=60

y=30 years

Find the value of x

x=y+10  > x=30+10=40 years

therefore

Shravan's age is 40 years old

Gaurav’s age is 30 years old

no not all of them.

step-by-step explanation:

some of them have a square base.