Answer:
First tanks
Step-by-step explanation:
Rate for the first tank
One tank is filling at a rate of 5/8 gallon per 7/10 hour.
= 5/8 gallon ÷ 7/10 hour
= 5/8 ×10/7 (gallon/hour)
= 25/28 gallon/hour
= 0.8928571429 gallon /hour
Rate for the second tank
A second tank is filling at a rate of 5/9 gallon per 2/3 hour.
5/9 gallon ÷ 2/3 hour
5/9 × 3/2 (gallon per hour)
= 5/6 (gallon per hour)
= 0.8333333333 gallon/hoir
The tank that is filling faster the first tank at the rate of 0.8928571429 gallon /hour