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50 - 47 = 3
3/50 = 0.06 = 6.0%
By switching service providers, a family's telephone bill decreased from about $50 a month to about $47. What was the percent of decrease?
3/50 = 0.06 = 6.0%
The magnitude of increase may be given, or you may have to find it, by subtracting 50-47 in this case.
The prior value is given as 50.
Then, divide to find the percent change.
First, calculate the difference between the original bill and the new bill:
$50 - $47 = $3
Next, divide the difference by the original bill:
$3 / $50 = 0.06
To convert the decimal to a percentage, multiply it by 100:
0.06 * 100 = 6
Therefore, the percent decrease in the telephone bill is 6%.