Question

1) Jack's brother is nine more than 3/4 of Jack's age.

Jack is 16 years old, how old is his brother?

Answer 1

Jack's brother is 21 years old

Explanation:

let Jack=x

Then, Jack's brother= 3/4x+9

If Jack=16,

enter 16 into the expression

3/4(16)+9

= 12+9

=21