



 
Hi Michelle, You don't know the number of passengers, how much each paid or the cost of renting the bus. If you knew two of these then you could calculate the third. Thus for example if the number of passengers is $N$ and each paid $C\$$ then the cost of renting the bus would be $N \times C\$.$ Now look at the first passenger's comment "if there were 9 more passengers, they would have paid each $5\$$ less." That is if the number of passengers were $N+9$ then each would have to pay $(C5)\$$ to cover the cost of the bus so $(N+9) \times (C5)\$ = N \times C\$.$ Expand and simplify this equation. What equation do you get from the second passenger's comment? Solve these equations for $N$ and $C.$ Make sure that you verify your answer. Penny  


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