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The average cost of 5 items is \$316.05. The first four items cost \$48.20, \$40.60, \$63.75, and \$70.15. Find the cost of the fifth item.

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Add all the prices of the four items, then subtract the total from \$316.05. What's left is the answer: \$93.35

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Thank you
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You're welcome.
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I thought it was like multiply the average by five then subtract. Your answer makes more sense.
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It's not that simple.lol
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Dang it! Then how come when I solve similar problems like that, I get it right?
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(x+ 48.20 + 40.60 + 63.75 + 70.15)/5= 316.05..
Solve for x.You'll get the correct ans.It's time to do the homework again :)
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Why are we dividing it by 5?
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BEC,we are taking the average of those 5 numbers.
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Oh yeah.........
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Why

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1357.55

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That's what I got when I tried but doesn't work
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1357.55 + 48.20 + 40.60 + 63.75 + 70.15= 1580.25/5= 316.05
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1357.55 is the correct answer :)

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Let A = average
f. = cost of 5th item
316.05=(48.20+40.60+63.75+70.15+f)/5