6:22, 9:33, are both equivalent to 3:11.
1. 3/4
2. im not sure if it means after taking away 3/4, but if it is, its 10/4
x=10/4 and -30/4 i believe, im not too good with fractions, sorry if its wrong :((
10 - 2.99 = 7.01 and 7.01 - 1.07 = 5.94 so you will get 5.94 in change