"susan wants to buy a paddle boat for $840. she will pay 20% down and pay rest in six montly installments. how much will her monthly installments be? "

So her initial down payment will be 840 x 0.2= 168
Then we take that number and divide it by 6
= 28

For the best possible grade mention how she this is the best because blah, blah, blah. :)