Question

A company manufacturing paper coffee cups produces 540 paper coffee cups every half hour . How many lapsed coffee cups will be produced in 3 hours and 30 minutes , 5 hours 15 minutes 8 hours 45 minutes

Answer 1

`C_(3.5h)=3780 \ cups\\\\C_(5.25hr)=5670\ cups\\\\C_(8.75hr)=9450\ cups`

Explanation:

The rate of production is 540 per 0.5hr=>1080 per hour.

Let t be the number of hours. We convert the times in hours only(1 hr=60mins)

• 3hrs 30 mins=3.5hrs
• 5hrs 15mins=5.25hrs
• 8grs 45 mins=8.75hrs

#We therefore multiply directly to find the number of cups after t hours:

`C_(3.5h)=1080* 3.5\\\\=3780 \ cups\\\\C_(5.25hr)=1080*5.25\\\\=5670\ cups\\\\C_(8.75hr)=1080* 8.75\\\\=9450\ cups`