Question

Each American throws out an average of 1650lb of garbage per year. Convert this weight to kilograms using the fact that 1kg=2.2lb.

Answer 1

Solution

Given that

$\begin{gathered} 1\text{ kg = 2.2lb} \\ \\ \Rightarrow1\text{ lb = }\frac{1}{2.2}\text{ kg} \\ \\ \text{ multiplying both sides by }1650\text{ } \\ \\ \Rightarrow1650\times1\text{ lb}=1650\times\frac{1}{2.2}\text{ kg} \\ \\ \Rightarrow1650\text{ lb }=\frac{1650}{2.2}\text{ kg} \\ \\ \Rightarrow1650\text{ lb}=750\text{ kg} \end{gathered}$

Therefore, 1650 lb is 750 kg.