I went to the store and bought a pair of boots and a jacket and my total was $125. The price of the jacket is $15 more than triple the price of the boots. How much do the boots cost?

Lisa has three classes that each last 50 minutes. what is the total number of minutes of the three classes

The volume of gas a balloon can hold varies directly as the cube of its radius. imagine a balloon with a radius of 3 inches can hold 81 cubic inches of gas. how many cubic inches of gas must be released to reduce the radius down to 2 inches?

Liz had 140 pens and inna had 100 pens. after inna gave liz some pens, liz had 3 times as many pens as inna. how many pens did inna give liz?