Problema Solution
Micheal gets a $8 commission for each warranty plan that he sells, and $.50 for each email address he gets from the customer. If he makes a total of $50 in one shift, and sells or collects 40 items, how many of each did he sell?
Answer provided by our tutors
for each warranty plan : $8 = x
for each email address : $.50 = y
then
8x + .5y = 50
x + y = 40
then
8x + .5y = 50
8x + 8y =320
solving above equations:
y = 36
x= 4
for each email address : $.50 = y
then
8x + .5y = 50
x + y = 40
then
8x + .5y = 50
8x + 8y =320
solving above equations:
y = 36
x= 4