Some friends decide to go to the aquarium together.Each person pays $7.50 to get in.They spend a total of $40 for the shark exhi
bit.The total cost is $70.Solve 7.5x+40=70 to find how many people went to the aquarium.
1 answer:
7.5x+40=70=> 7.5x=30=>x=30/7.5 so x = 4 people
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