Question

a pool tank fills 60 gallons of water in 1/5 of an hour. How many gallons of water can be filled up in 1 hour?

Answer 1

If it takes 1/5 hour to fill 60 gallons
than multiply the fraction by 5 to get a whole hour
and multiply the 60 gallons by 5 to get the amount of water created in that hour
60*5= 300 gallons of water in 1 hour

Answer 2

From 1/5 to 1 hour is *5 so 1/5*5 = 5/5

60*5 = 300 gallons in 1 hour