Divide the amount he has to pay off with the 8 months. That is 200 divided by 8 which is 25. He has to pay 25 each month.
After five weeks they will have the same amount of money.
(70-23.9+69)/6=Answer
this is because you add them together and divide them by 6. dividing it makes it 1/6th
hope this helps!
I would say never because 5(x-1) would equal 5x-5