Question

sue had 4 slices,tammy had 2 slices; 1/3 left over....how many slices did pizza have

Answer 1

sue had 4 slices
tammy had 2 slices
added, that is 6 slices.
there was 1/3 left....that means 2/3 of pizza was already eaten. That means 6 slices is 2/3.
6/(2/3) = x/(3/3) -- 6 slices to 2/3 = x slices = 3/3
cross multiply
2/3x = (6)(3/3)
2/3x = 6 -- divide by 2/3 on both sides
x = 6/(2/3)
x = 6 * 3/2
x = 18/2
x = 9

check..
2/3 of 9 = 2/3(9) = 18/3 = 6 slices
1/3 of 9 = 1/3(9) = 9/3 = 3 slices

There were 9 slices of pizza in total.

Answer 2

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