Question

One number is 10 less than twice another. If their difference is 31, what is the larger number?

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Answer 1

One number is 10 less than twice another.

This translates to n=2m-10

Their difference is 31

This translates to n-m=31

n-m=31

(2m-10)-m=31

m-10=31

m=41

n-41=31

n=72

Therefore the larger number is (B) 72

Explanation: