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24-10-2019
Mathematics

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Dave bought 18 packets of cookies for $19.80. Each packet of cookies contains 10 cookies. Find the cost of each cookie to the nearest tenth of a cent.

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24-10-2019

There are 18 packets.

Each packet has 10 cookies.

Let T = total number of cookies.

T = 10(18)

T = 180

There are 180 cookies.

Let C = cost of each cookie.

Use the equation C = 19.80/T.

You know what T is, right? Look above to see the value of T. Plug that T-value into the equation and solve for C.

After that, round your answer as instructed.

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