Answer:
d..
Step-by-step explanation:
Answer:
Step-by-step explanation:
i dont know the exact answer ..but i know that the hours would be a larger number and first you need to find out how many ours 1 pump takes so you do 3 divided by 7 which on the calculator its 0.4...
after this you times it but i dont know by what
9 and 3 are the only common factors between 54 and 90
Is this a serious question?
