Solve for the following: the price of a field trip is represented by P=$5a+$3c. If the price of the field trip is $85 and there
are 20 children, c, how many adult are there?
1 answer:
P=$5a+$3c
$85 = $5a+$3(20)
$85 = $5a + $60
$85-$60 = $5a + $60-$60
$25 = $5a
$25/$5 = $5a/$5
a = 5
Check
P=$5a+$3c
$85=$5(5)+$3(20)
$85=$25 + $60
$85=$85
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