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At the market, 8 batteries cost 
$10.
How much do 6 batteries cost?

$

At the market, 88 batteries cost $10 \$ 10 .\newlineHow much do 66 batteries cost?\newline$ \$

Full solution

Q. At the market, 88 batteries cost $10 \$ 10 .\newlineHow much do 66 batteries cost?\newline$ \$
  1. Determine cost per battery: Determine the cost per battery. To find the cost of each battery, divide the total cost by the number of batteries. $10/8\$10 / 8 batteries = $1.25\$1.25 per battery
  2. Calculate cost for 66 batteries: Calculate the cost for 66 batteries. Now that we know the cost per battery, multiply this by the number of batteries we want to find the cost for. $1.25\$1.25 per battery * 66 batteries = $7.50\$7.50

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