Question

Xavier is half as old as Jessica. The sum of their ages is 63. How old is Jessica? (

Answer 1

31.5

Explanation:

Answer 2

let their age be x and y

x=y.......1st equation

2

now,

product of their age

x+y=63

y +y=63 (putting the value of x=y/2)

2

3y =126

y=126

3

y=42

hence,

age of jessica is y =42.