Question

Zain is x years old and his sister Ifrah is ( 5x – 12 ) years old . Given that Ifrah is twice as old as Zain , then the age of Ifrah is?​

Answer 1

Answer:

Ifrah is 8 years old.

Step-by-step explanation:

Zain's age :- x. Ifrah's age :- (5x-12)

Ifrah is twice as old as Zain.

So,

2x = 5x-12

2x-5x = -12

-3x = -12

x = 4

Ifrah's age = 5x-12

= 5(4)-12

= 20-12

= 8

Hence prooved :)