Question

When a certain valve is open, 281 gallons go through it in one hour. The number of gallons that would go through in 91 hours is gallons.

Answer 1

281
X91
25,571 gallons in 91 hours

Answer 2

In 1 hour  281 gallons went through.

In  91 hours gallons that would go through =  281 * 91 = 25571

= 25571 gallons.