Question

alisha's age years ago is half her age 13years later. her present age is

Answer 1

Hi here is your answer,
let Alisha's present age be x

$1 - x = 1 \div 2 \times( 13 + x)$
1 - x = 13/2 + x/2
1 - x = (13+x)/2
-x = (12+x)/2
-x - x/2 = 12/2
(-2x-x)/2 = 6
-3x/2 = 6
-3x = 12
x = 12/3 = 4
therefore her present age is 4 years