09-09-2016
Mathematics

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The sum of two numbers is 143. Their difference is 136 less than the sum. What are the two numbers?

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nobillionaireNobley nobillionaireNobley

09-09-2016

Let the two numbers be x and y, then
x + y = 143 . . . . . (1)
x - y = 143 - 136 = 7 . . . . (2)

(1) - (2) => 2y = 136 => y = 68
From (1), x + 68 = 143 => x = 143 - 68 = 75

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