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18 December, 05:19

The total cost to buy 12 balloons was $4. The total cost to buy 19 balloons was $6. What was the average cost of the balloons

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  1. 18 December, 06:33
    0
    Average cost=total number of balloons/total cost=

    total number=12+19=31

    total cost=4+6=10

    so average cost=31/10=3.1

    the average cost was $3.10 per ballon
  2. 18 December, 06:55
    0
    The average cost of balloons is $3
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