Help me I can't do unit rates

Question

One fish tank is filling at a rate of 5/8 gallon per 7/10 hour. A second fish tank is filling at a rate of 5/9 gallon per 2/3 hour. Which tank is filling faster? Explain how you know.

Answer 1

Rate of first tank = (5/8 gal) ÷ (7/10 hr) = (5/8)(10/7) = 50/56 gal/hr = 25/28 gal/hr = 0.892857 gal/hr

Rate of second tank = (5/9 gal) ÷ (2/3 hr) = (5/9)(3/2) = 15/18 gal/hr = 5/6 gal/hr = 0.833333 gal.hr

The first tank is being filled at a faster rate than the second.