SOLUTION: a number is two-fifth times another number . if their sum is 70 ' find the number

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Question 364067: a number is two-fifth times another number . if their sum is 70 ' find the number
Answer by qa02(2) About Me  (Show Source):
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20 and 50
20 is two-fifth's of 50
and 20 + 50 = 70
2/5X + X = 70
7/5X = 70
(5)(7/5X) = 70(5)
7X = 350
X = 50
2/5 of 50 = 20
20 + 50 = 70