Question

Ruby works in a bike shop where she makes repairs. She needs to order tires for bikes and quads, which have different kinds of tires. Write an expression that represents the number of tires she’ll have to order to her shop for b, bikes and q, quads.

Answer 1

Each bike has two tires, while each quad has four tires. Therefore the number of tires Ruby has to other is given by the number of tires used by the bikes added by the number of tires used by the quads. This is shown on the expression below:

$\text{tires}=2\cdot b+4\cdot q$