Question

a 1 pound weight has a mass of about 0.45 kilograms. a car weighs 2100 pounds. what is the mass of the car in kilograms, rounded nearest tenth of a kilogram?

Answer 1

$\frac{1}{0.45} = \frac{2100}{x} \\ \\ 1*x=0.45*2100 \\ \\ x=945$


945 kilograms