# aig math

the sum of 2 numbers is 77. one number is 2 1/2 times as big as the other number.find the difference between the 2 addends.please show how you got your answer.

my answer is 72.6, am i right if not please tell me why and how.

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1. the numbers are n and 5/2 n

add them up to get 77:

n + 5/2 n = 77
7/2 n = 77
n = 22

the numbers are 22 and 55

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2. Let the two numbers be x and 2.5x. Their difference is 1.5x

3.5x = 77
x = 22
2.5x = 55
The difference is 1.5x = 33

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3. one number form 75 is 100

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