SOLUTION: Could someone please show me how to do this problem? The electricity costs of a business increased from $10,000 one year to $13,000 the next. To the nearest whole percent, what wa

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Question 408926: Could someone please show me how to do this problem? The electricity costs of a business increased from $10,000 one year to $13,000 the next. To the nearest whole percent, what was the rate of increase?
A) 31% B) 30%
C) 24% D) 60%

Found 2 solutions by nerdybill, shafqatlaghari:
Answer by nerdybill(7384) About Me  (Show Source):
You can put this solution on YOUR website!
Could someone please show me how to do this problem? The electricity costs of a business increased from $10,000 one year to $13,000 the next. To the nearest whole percent, what was the rate of increase?
A) 31% B) 30%
C) 24% D) 60%
.
Amount of increase: 13000-10000= $3000
Original cost: $10000
.
Percent increase= 3000/10000 * 100
Percent increase= 3/10 * 100
Percent increase= 3 * 10
Percent increase= 30%

Answer by shafqatlaghari(2) About Me  (Show Source):
You can put this solution on YOUR website!
13000/10000=1.30 ===> 130%
original price 10000=> 100%
so that 130-100===> 30% increase