Posted by lidia on Saturday, August 18, 2012 at 2:48pm.
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.

aig math  Steve, Saturday, August 18, 2012 at 3:11pm
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

math  drwls, Saturday, August 18, 2012 at 3:16pm
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
Your answer is incorrect.

aig math  corinne, Sunday, September 30, 2012 at 4:39pm
one number form 75 is 100
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