A machine starts production of matchboxes at the rate of 12,000 per hour.The rate of production decreases by 40% every hour. Calculate the total number of matchboxes produced in the first two hours.
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Step-by-step explanation:
decreases=40/100*12000
=4800 per hour
12,000-4800=7200 second hour
12,000+7200=19,200 is final answer
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