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A restaurant catered a party for 40 people. A child’s dinner (c) cost $11 and an adult’s dinner (a) cost $20. The total cost of the dinner was $728. How many children and adults were at the party?

 Jul 29, 2020
 #1
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40 people

 

c = # children                                 cost 11c

a = #adult  = 40 -c                          cost 20 (40-c)         summed = 728

 

11c       +       20(40-c)        = 728      solve for c      then   a  = 40 - c

 Jul 29, 2020

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