<PRE><B>Question 995553</B>
Write an equation for each statement
:
3 numbers added equal 500.
a + b + c = 500
 The second number is 4 times the first
b = 4a
or 
a = .25b
 and the third is 5 times the second.
c = 5b
:
find each number.
Substitute for a and c in the first equation
.25b + b + 5b = 500
6.25b = 500
 b = 500/6.25
 b = 80
:
You can find a and c now. See that they add up to 500 
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