Can someone explain to be how to solve this? i have no idea.

What is the result of converting 60 ounces to pounds remember there are 16 ounces in a pound

Three numbers x, y, and z are in the ratio 2: 7: 8. if 12 is subtracted from y, then three numbers form a geometric sequence (in the order x, y–12, z). find x, y, and z. there are 2 sets.

The candy store is having a 30% off sale. emma is going to buy $7.50 worth of candy.how much will she pay after the discount