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Yakvenalex [24]
3 years ago
9

The math teachers decided to throw a party. One teacher bought 7 cookies and 2 ice cream bars for $10.95. Another teacher bought

4 cookies and 3 ice cream bars for $10.25 . How much did one cookie and one ice cream bar cost, individually?​
Mathematics
1 answer:
tatyana61 [14]3 years ago
8 0

Answer:

0.95, 2.15

Step-by-step explanation:

cookie-x

ice bar-y

7x+2y=10.95 (*3)

4x+3y=10.25 (*2)

21x+6y=32.85

8x+6y=20.5

21x-8x=32.85-20.5=12.35

13x=12.35

x=0.95

2y=10.95-7*0.95=4.3

y=2.15

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