
Bradford T. answered 09/08/21
Retired Engineer / Upper level math instructor
Prices per box:
Chocolate Bliss:
ycb = 2x+12
Expression in sweets:
yes = 3x+10
Where x is the number of candies
They are wanting the the number of candies in a box when the price of 5 boxes of CB costs the same as 4 boxes of ES.
5ycb=4yes
5(2x+12)=4(3x+10)
10x+60 = 12x+40
2x=20
x = 10 pieces of candy per box
The total price from either candy store = 5(20+12) = 100+60 = $160.
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Another method
5(2x+12)=10x+60=P, P = price
4(3x+10)=12x+40=P
Subtract the 2 equations
-2x+20=0
-2x=-20
x=10
P = 12(10)+40 = 120+40 = $160