Bob's shower uses 18 gallons of water every 3 minutes. How many gallons of water does Bob use if he takes a 13 minute shower?

1 Answer
Jun 1, 2018

78 gallons of water

Explanation:

Given that Bob's shower uses 18 gallons of water every 3 minute,

Hence,
3 minutes -> 18 gallons

1 minutes -> ? gallons

:. In 1 minute (18/3) gallons of water would be used.

(18/3) = 6

:. 6 gallons of water per minute is used by Bob's shower.

So, how much water would be used in 13 minutes,

1 minute -> 6 gallons

:.13 minutes -> (6 x 13)

(6 x 13) = 78

Hence, 78 gallons of water would be used by Bob while using his shower.