The question seems to be pointing towards a multiple choice response but I will do my best. The first equation would be 15x+12y=9.30 and the second would be 10x+4y=4.60, x represents flour and y represents sugar.
Hope this helps.
If you meant to solve for x...
I belive its 18cm,,,,,,,,,,,,,,,,,,,,,,,,,,,,
30 miles (104-74). Or 104 if the first 74 miles was not on the turnpike xd