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Since we have to find x when the total cost in dollars y should be equal

0.75x = 10 + 0.50x

subtract 0.50x from both sides

0.25x = 10

Multiply with 4 on both sides to make coefficient of x equal to 1

0.25*4 x = 10 *4

x = 40

So when the team purchases 40 bars the cost for both companies is equal

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