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xenn [34]
2 years ago
14

Nancy put new insulation in her attic and discovered that her heating bill for December decreased from $160 to $100. What is the

percent decrease?
The amount of decrease is ______?
Mathematics
1 answer:
WINSTONCH [101]2 years ago
4 0

Answer:

37.5% decrease

Step-by-step explanation:

To find a relative percentage you generally follow the rule of part divided by whole.

$100 / $160 = .625 (62.5%)

So $100 is 62.5% of $160

To find the decrease we need to subtract 62.5% from 100%

100 - 62.5 = 37.5

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