The manager at a restaurant keeps track of the number of calzones and slices sold each day and the total money received. On Wednesday, a total of 86 calzones and slices were sold, and the money collected was $770. If calzones are sold for $10 and slices are sold for $7, how many calzones and slices were sold?

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Byrd

Mathematics

17 October, 05:12

The manager at a restaurant keeps track of the number of calzones and slices sold each day and the total money received. On Wednesday, a total of 86 calzones and slices were sold, and the money collected was $770. If calzones are sold for $10 and slices are sold for $7, how many calzones and slices were sold?

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Tripod · Answer 1

C=number of calzones sold

s=number of slices sold

c+s=86

10c+7s=770

alright

subsitute

c+s=86

minus s both sides

c=86-s

subsittute 86-s for c

10c+7s=770

10 (86-s) + 7s=770

860-10s+7s=770

860-3s=770

minus 860 both sides

-3s=-90

divide both sides by - 3

s=30

subsitute back

c=86-s

c=86-30

c=56

56 calzones were sold

30 slices were sold