SOLUTION: The sum of two numbers is 210 and one is two fifths of the other. find the numbers.

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Question 157401: The sum of two numbers is 210 and one is two fifths of the other. find the numbers.
Answer by jojo14344(1513) About Me  (Show Source):
You can put this solution on YOUR website!
Let x = 1st no.
%282%2F5%29%28x%29 = 2nd no.
So,
x%2B%282%2F5%29%28x%29=210
%285x%2B2x%29%2F5=210, cross multiply
7x=1050 ---> cross%287%29x%2Fcross%287%29=cross%281050%29150%2Fcross%287%29
x=150 ------------------> 1st no.
%282%2F5%29%28150%29=300%2F50=60 ---> 2nd no.
It follows: 150%2B60=210
thank you,
Jojo