Simone has 20 bills. one fifth of the bills are hundreds, 1/4 of them are fifties, 1/10 of them are $20s. the rest of the bills are tens.
simone has$780 altogether. how many of each kind of bill does she have

Can someone me with this problem i don't understand i need

Three friends went on a road trip from phoenix, az, to san diego, ca. mark drove 50 percent of the distance. jason drove 1/8 of the distance. andy drove the remainder of the distance. 1. andy thinks he drove 1/4 of the distance from phoenix, az, to san diego, ca. is andy correct? 2. the distance from phoenix, az, to san diego, ca, is 360 miles. how many miles did each person drive? 3. solve the problem. what is the answer in total?

To increase her number of students, the instructor put a coupon in the local paper offering to waive the one-time fee for new students. what is the value of the coupon?