A chocolate company decides to promote its chocolate bars by including a coupon with each bar. A bar costs a dollar, and with c coupons you get a free bar. So depending on the value of c, you get more...

A chocolate company decides to promote its chocolate bars by including a coupon with each bar. A bar costs a dollar, and with c coupons you get a free bar. So depending on the value of c, you get more than one bar of chocolate for a dollar when considering the value of the coupons. How much chocolate is a dollar worth (as a function of c)?