Question

It cost $5.25 for a bottle of 150 vitamins. if the cost varies directly with the number of vitamins in the bottle, what should a bottle of 250 vitamins cost? and what is the equation?
please explain if you could

Answer 1

$5.25 / 150 gets you the price per vitamin, $.035 (3.5 cents). Then you can multiply this by 250 for the price of a 250 bottle, $8.75.