Step-by-step explanation:
let, the age of sumi = x
therefore, the age of her bro = x-9 ( because sumi is 9 year older than her bro)
after 10 yr, sumi's age = 2×(x-9) (because it will be
twice of her bro's
present age)
& after 10 yr bro's age = (x-9)+10 (10 yr more than
= x+1 his present age)
acc. to question,
2(x-9)=(x+1)+9 (because sumi is still 9 yr older than
2x-18= x+10 her bro, so if we add 9 to bro's age
2x-x=10+18 both ages are equated...)
x = 28
so, the age of sumi is 28 & the age of her bro is
x-9=28-9=19
Copyright © 2024 EHUB.TIPS team's - All rights reserved.
Answers & Comments
Step-by-step explanation:
let, the age of sumi = x
therefore, the age of her bro = x-9 ( because sumi is 9 year older than her bro)
after 10 yr, sumi's age = 2×(x-9) (because it will be
twice of her bro's
present age)
& after 10 yr bro's age = (x-9)+10 (10 yr more than
= x+1 his present age)
acc. to question,
2(x-9)=(x+1)+9 (because sumi is still 9 yr older than
2x-18= x+10 her bro, so if we add 9 to bro's age
2x-x=10+18 both ages are equated...)
x = 28
so, the age of sumi is 28 & the age of her bro is
x-9=28-9=19