A shower uses 8 litres per minute.
A bath uses 78 litres of water in total.

a) How many litres of water should Olivia save by having a 7 minute shower instead of a bath?
b) How long would the shower have to be on for so that it uses the same amount of water as the bath?
Give your answer in minutes and seconds.

Question

15-06-2024
Mathematics

Answered

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A shower uses 8 litres per minute.
A bath uses 78 litres of water in total.

a) How many litres of water should Olivia save by having a 7 minute shower instead of a bath?
b) How long would the shower have to be on for so that it uses the same amount of water as the bath?
Give your answer in minutes and seconds.

Sagot :

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darrenl37843 darrenl37843 · Answer 1 · 2024-06-15T13:43:39-04:00

Answer:

a) 22 liters of water would be saved

b) The shower would have to be on for 9 minutes and 45 seconds.

Step-by-step explanation:

a) A bath uses 78 liters. To find out how many liters a shower uses in 7 minutes, multiply 8 by 7. Then, subtract that product (which is 56) from 78, which gives you 22 liters.

b) Divide 78 liters by 8, since a shower uses 8 liters per minute. This gives you 9 minutes and 3/4 of a minute, which converts to 9 minutes and 45 seconds. (there are 60 seconds in a minute, and 3/4 of 60 is 45)

Sagot :

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