A dog has three puppies.Spot weighs 12 ounces.Rascal weighs 9.5 ounces.Socks weighs 10.2 ounces.What is the total weight of the litter expressed to the correct number of significant figures?
A)31.7 ounces
B)31 ounces
C)32 ounces
D)30 ounces
E)31.70 ounces

Question

Quizplus · Accepted Answer

The total weight of the puppies is 12 + 9.5 + 10.2 = 31.7 ounces. However, since the weights of the puppies are given with at most two significant figures (9.5 and 10.2), the total should also be expressed with two significant figures, rounding 31.7 to 32 ounces.

A Dog Has Three Puppies