We have two numbers. Their sum is 140. One-fifth of the first number is equal to half the second number. Determine those unknown numbers.
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I just took x as 40 and y as 100 and it says I'm wrong :(
Please read again: One-fifth of the first number is equal to half the second .... 40/5 is not equal 100/2
To solve this example are needed these knowledge from mathematics:
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