# Margie is three times older than lilet.in 15 years the sum of their age is 38 years find their present age.

2
by marjoriemedillo

2015-03-15T10:59:40+08:00

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(I'm going to solve this problem using the RESAC form).

R : x = Lilet's age; 3x = Margie's age

E : x + 15 + 3x + 15 = 38

S : x + 15 + 3x + 15 = 38
4x + 30 = 38

x = 2; 3x = 6

A : Margie is 6 years old while Lilet is 2 years old.

C : x + 15 + 3x + 15 = 38
2 + 15 + 3(2) + 15 = 38
2 + 15 + 6 + 15 = 38
17 + 21 = 38
38 = 38

2015-03-19T14:20:00+08:00

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Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
Margie=M
Lilet=L

M=3L

M+15+L+15=38
M+L+30=38
Subtract both sides by 30
M+L=8
Substitute the value of L
3L+L=8