I'm in year 7 and need help on this homework please help :/
help me finish it

Answer:
Shower is cheaper.
Step-by-step explanation:
10.6 times 7 is 74.2 L
35 times 120 times 40 = 168,000 cm
168,000 divided by 1000 = 168 L
(divide by 1000 to go from cm to l)