Question

My uncle's present age is twice of my sister's age 10 years ago my uncle's age was thrice of my sister's age. Let me calculate and write their present age separately by forming two equations.

Answer 1

Answer:

Let's your sisters age be x and your uncles age be y

Given,

y=2x eq 1

before 10 years their age will be present age -10

Hence y- 10= 3(x-10) eq 2

Put y=2x from eq1 in eq2

2x- 10= 3x- 30

x= 20

Put x=20 in eq 1 then your uncle'sage is 40

And your sisters age is 20 at present