Let f be the number of cups of sugar. And let f be the number of cups of flour. We're given two equations:

- f = 10s
- s + f = 8 & 1/4

s + 10s = 8 & 1/4

11fs= 33/4 <-- 8 & 1/4 = 33/4

Cross multiply:

44s = 33

Divide each side by 44:

s= 33/44

Divide top and bottom by 11 and we get s

**= 3/4 or 0.75**

Now substitute this into (1):

f = 10(33/44)

**f = 330/44 or 7 & 22/44 or 7.5**