jackfr2
A shop sells each chocolate for $1 . however , if any purchaser returns three empty wrappers , he will get a free chocolate. If John has a total of $15 how many chocolate can he get at total ?
a. 15
b. 19
c. 20
d. 21
e. 22
Posted from my mobile device
Given:
1. A shop sells each chocolate for $1 .
2. however , if any purchaser returns three empty wrappers , he will get a free chocolate.
Asked: If John has a total of $15 how many chocolate can he get at total ?
He can get 15 chocolates for $15.
But he can exchange 15 wrappers (5 sets of 3 empty wrappers) to get 5 chocolates more
Further he can exchange 1 more set of 3 empty wrappers to get 1 more chocolate
Now he can exchange 1 more set of 3 empty wrappers to get 1 more chocolate.
Total chocolates = 15 + 5 + 1 + 1 = 22
IMO E