A formula for 8 bottles of window cleaner calls for 6 cups of running alcohol, 2 1/4 gallons of water, and 1 1/2 of ammonia. How
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Answer:
Step-by-step explanation:
The question in English is
In one appliance store, a refrigerator cost $8,900 and they lowered it to $7,120. What percentage did they lower?
we know that
$8,900 ------> represent the 100%
so
by proportion
therefore
the percentage is equal to