You can
put this solution on YOUR website!Simple interest investment:
You put P money in the bank; each year they add Pr interest to your account:
P,P+Pr, P+2Pr, P+3Pr....
-----------------
Cost of n pairs of shoes
1st pair costs C
2 pairs costs C+C
3 pairs costs C+C+C
etc.
===========
Cheers,
Stan H.
(