Given a: b and b: c, find a: b: c. write the ratio in simplest form. a: b=4: 7 and b: c=5: 13 need

Acomputer store bought a program at a cost of $10 and sold it for $13. find the percent markup

Marina baked cookies. she gave 3/4 of the cookies to the scout bake sale. she shared the remaining 6 cookies with her friends. how many cookies did marina bake?

Find the commission on a $590.00 sale if the commission is 15%.