Using central heating oil for 6 hours a day, a tank full of oil will last for 90 days.
If the oil were used for only 5 hours a day, how much longer would it last?
Please try to solve this?
2010-06-11 10:07 pm
回答 (5)
2010-06-11 10:10 pm
✔ 最佳答案
6 * 90 = 540 hours total for the tankAt 5 hours/day, 540/5 = 108 days. Therefore, it would last 108 - 90 = 18 days longer.
2010-06-12 5:11 am
90 * 6 / 5 = 108
2010-06-12 5:12 am
6 hours a day for 90 days is 540 hours.
540 hours divided by 5 hours a day is 108 days.
The oil would last 18 more days.
540 hours divided by 5 hours a day is 108 days.
The oil would last 18 more days.
2010-06-12 5:09 am
1/6=90
1/5=x
x=108 days
108-90=18 days longer
1/5=x
x=108 days
108-90=18 days longer
2010-06-12 5:09 am
It would last 75 days
參考: I used a calculator. I divided 90 days by 6 hours to get 15. So, I multiplied 5 by 15 to get 75 days
收錄日期: 2021-05-01 13:14:44
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