Sorry read wrongly. fifty become five.Jerico wrote:Q : 2/7 of the notes in a cash box is hundred-dollar notes. The rest of the notes are fifty-dollar and ten-dollar notes. The number of fifty-dollar and ten-dollar notes is 450 more than the number of hundred-dollar notes. The ratio of the number of fifty-dollar notes to the number of ten-dollar notes is 7:8. Find the difference between the total value of the fifty-dollar notes and the total value of the ten-dollar notes in the cash box.

Pls help. Thank you.

1. 2/7 is hundred-dollar notes, so 5/7 is others.

2. The difference is 3/7 which is 450, so 1/7 is 150, 5/7 is 850.

3. Now the ratio of 50-dollar to 10-dollar is 7:8, so there are 7/15 x 850=350 50-dollar and 400 10-dollar.

4. total value of 5-dollar notes = 50 x 350 = 17500, total value of 10-dollar notes = 10 x 400 = 4000.

5. Difference in value = 17500 - 4000 = $13500