Homework Help: Math

Posted by Carolina on Tuesday, April 26, 2011 at 8:54pm.

Three times as many children as adults attend a concert on Saturday. An adult's ticket cost $7 and a child's ticket cost $3. The theater collected a total of $6,000. How many people bought tickets?

Math - MathMate, Tuesday, April 26, 2011 at 11:34pm
Let
a=number of adults
then
3a=number of children
Total revenue, $6000
=7a+3(3a)
=16a

a=6000/16=375 (number of adults)
3a = 375*3 = 1125 (number of children)

Check:
7*375+1125*3=$6000 OK

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