How much will it cost him to send 3 small packages and 7 large packages?

Question

David is mailing packages. Each small package costs him $2.90 to send. Each large package costs him $4.20 . How much will it cost him to send 3 small packages and 7  large packages?

 

 

Answer 1

3x2.9 + 7x4.2 = 8.7 + 29.4 = $38.10

Answer 2

Total Cost = (Number of Small Packages x Cost of Small Packages) + (Number of Large Packages x Cost of Large Packages)

Total Cost = (3 x $2.90) + (7 x $4.20)

Total Cost = ($8.70) + ($29.40)

Total Cost = $38.10