Question

Use a proportion to solve.
If 300 vitamins cost $5.75, what should 500 vitamins cost?

Answer 1

Answer:

300 vitamins = $5.75

500 vitamins = $x

Cross multiplying

300 vitamins x $x = $5.75 x 500 vitamins

300x = 2875

Dividing both sides by 300 to make x stand alone

x = 2875/300

x = $9.583