Water tank

In an empty fire tank, 2150 hl of water jetted in 5 hours. How many hectoliters of water was jetted every hour? How many hectoliters of water was in the tank after three hours?

Correct result:

a =  430 hl
b =  1290 hl


t=2150 hl a=t/5=2150/5=430 hl
b=3 a=3 430=1290 hl

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