Paper plates = Pjbsocal wrote:The total cost of 100 paper plates and 200 paper cups is $5.00. At the same rates, what is the total cost of 20 of the plates and 40 of the cups?
A $0.90
B $1.00
C $1.20
D $1.50
E $1.60
Paper cups = C
100P + 200C = $5
We have to find 20P + 40C.
Now if we divide the equation, 100P + 200C = $5, throughout by 5, we get
20P + 40C = $1
The correct answer is B.
