<PRE><B>Question 744499</B>
Mario is four years older than Pedro. The sum of their age is 40. How old are they ?


Let the age of Mario be n + 4

Let the age of Pedro be n


Therefore:

n + 4 + n = 40

2n + 4 = 40

Subtract 4 from each side of the equation.

2n = 36

Divide each side by 2

n = 18

n + 4 = 18 + 4 = 22



Answer:

Mario is 22 years old and Pedro is 18 years old.









Lennox Obuong
Algebra Tutor
Nairobi, Kenya
Email: obuong3@aol.com</PRE>