Answered

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Three slices of cheese pizza and four slices of pepperoni pizza cost $12.50. Twoslices of cheese pizza and one slice of pepperoni pizza cost $5.00. What is the priceof one slice of pepperoni pizza?

Three Slices Of Cheese Pizza And Four Slices Of Pepperoni Pizza Cost 1250 Twoslices Of Cheese Pizza And One Slice Of Pepperoni Pizza Cost 500 What Is The Priceo class=

Sagot :

Price of one slice = ?

Then write

3X + 4Y = 12.50

2X + 1Y = 5.00

Then now find Y

Multiply by 4, and substract 2X + Y = 5

4• ( 2X + Y ) = 4• 5.00

8X + 4Y = 20

now substract 3X + 4Y = 12.5

(8X + 4Y)- ( 3X + 4Y) = 20 - 12.5

(8X - 3X )+ 4Y - 4Y = 7.5

5X + 0 = 7.5

. X = 7.5/5 = 1+ 1/2 = 1.5

Then ANSWER IS

Price of 1 slice of pepperoni = $1.5 dollars

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