A jeweler sells gems at a cost in dollars per centigram that is 4 more than 6 times the weight of the gem in centigrams

dollars-centigram

#1

A jeweler sells gems at a cost in dollars per centigram that is 4 more than
6 times the weight of the gem in centigrams. Thus, a gem that weighs w
centigrams will be sold at a price of 6w + 4 dollars per centigram — meaning
that a larger, heavier gem will cost more per centigram than a smaller gem. If
the jeweler sold a single gem for about $2500, what did the gem weigh to the
nearest centigram

Answer:

2500 = 6w + 4
2596 = 6w
w = 432.667 ----> 433