Answered

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Niki uses 15 litres of water every minute when she has a shower.
She uses 100 litres of water when she has a bath.
How many litres of water does she save by having a 3 1/2 minute shower instead of a bath?

Sagot :

15 litres per minute times three minutes is 45 litres for three minutes, and half a minute's worth of water in the shower is 7 1/2 (half of 15). 45+7 1/2= 52 1/2 litres of water.The difference between 100 and 52 1/2 is 47 1/2, which is our final answer.
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