yasminlockser6
06.07.2019 •
Mathematics
Tan's electricity bill for the month of august was $267.00. his september bill showed a 2% increase from his august bill. in october, his bill deacreased by 8% from the amount he was billed in august. how much did tan spend on electricity over the three-month period?
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Ответ:
Start by getting what a 1% depression would be:
267,000 / 100 = 2,670 (this is 1%)
In September, his cost increases 2%:
267,000 + 2 * 2,670 = 272,340
In October, the cost decreased by 8%:
267,000 - 8 * 2,670 = 245640
Add the three months up:
267,000 + 272,340 + 245,640 = $784,980
Ответ:
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