Item 6 A savings account earns 5% simple interest per year. The principal is $1200. What is the balance after 4 years?
1 answer:
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Answer:
Sedan: 4 passengers
Minivan: 6 passengers
Step-by-step explanation:
We can write the following system of equations:
, where
represents the number of people a sedan can seat and
represents the number of people a minivan can seat.
Subtracting the first equation from the second, we have:
Now plug in in any of the equations to solve for
:
Verify that the solution pair works:
Therefore, a sedan can hold 4 passengers and a minivan can hold 6 passengers.