SAT Mathematics Practice Test 4

Because there are 16 ounces in 1 pound, a 3-pound pizza weighs 3×16=48 ounces. One half of the pizza weighs

1

2

×48=24 ounces, and one-third of the half weighs

1

3

×24=8 ounces.Alternatively

1

2

×

1

3

=

1

6

, since, cutting the pizza into halves and then intothirds results in a pizza that is cut into sixths. Therefore, each slice of the 48-ounce pizza weighs

1

6

×48=8 ounces.
Choice A is incorrect and is the result of cutting each half into sixths rather than thirds. Choice B is incorrect and is the result of cutting each half intofourths rather than thirds. Choice D is incorrect and is the result of cutting the whole pizza into thirds.