It will take 3 months to payoff the balance. The total interest is $ 8.26.
The answer to this is 150.
If for the slower printer it takes 10 hours for the whole thing, how much has it done in 1 hour? well, since it takes 10 hours total, in 1 hour it has only done 1/10 th of the whole work.
the faster printer however, can do it in 6 total, how much has it done in 1 hour? well, 1/6 of the whole work.
now, let's say, they both work together, and it takes "t" hours to finish the whole thing with both rolling.
let's add both rates to see how much that is,
which is 3 hours and 45 minutes.
Well, the difference between 120 and 90 is 30. So, for every snow blower they would make 30 dollars of profit. 30 × 200 = 6,000.
ANSWER= 6,000