Question

A pound is approximately 0.45 kilogram. A person weighs 87 kilograms. What is the person’s weight, in pounds, when expressed to the correct number of significant figures?

A. 190 lb
B. 180 lb
C. 52 lb
D. 39 lb

Answer 1

87 kilograms =191.8 pounds

Answer 2

190 pounds

Step-by-step explanation:

Given that

A pound is approximately 0.45 kilogram

A person weighs 87 kilograms

Now change the unit form kilogram to pounds as follows:

1 pound / 0.45 kilogram * 87 kilograms

= 193.3 pounds

Now expressed to the correct number of significant figures

193.3 pound = 190 pounds