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Maths-

SAT

Easy

Question

A pizza parlor sells pizza slices for $3 each and calzones for $4 each. A group of friends spent $51 on pizza slices and calzones at the parlor. If they bought 6 calzones, how many pizza slices did they buy?

The correct answer is: 9

Let number of pizza slices they bought be x
Number of calzones they bought are 6
The cost they spent on calzones are 4 $cross times$ 6 = $24.
The cost they spent on pizza slices are 3 $cross times$ x = $3x. .
Total cost is 3x + 24 = 51
3x = 51 - 24 = 27
$x equals 27 over 3 equals 9$ .

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