SOLUTION: Find two numbers whose sum is 70 and such that one is 4 times as large as the other.

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Question 155456: Find two numbers whose sum is 70 and such that one is 4 times as large as the other.
Answer by oscargut(686) About Me  (Show Source):
You can put this solution on YOUR website!
Let x and y the numbers
sum is 70 then x+y=70
one is 4 times as large as the other
then x=4y
sytem to solve is
x%2By=70
x=4y
using substitution method
4y%2By=70
then
5y=70
then
y=14
x%2B14=70
then
x=70-14=56
Answer: numbers are 14 and 56