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KC
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A government wants to deepen a channel with a length of 150 27 Nov 2006, 13:56
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A government wants to deepen a channel with a length of 150 metres and width of 65 metres from 15 metres deep to 25 metres deep. The soil dug out from the channel will be dumped at a landfill, which can absorb an volume of 75,000 cube metres. What percent of the soil from the channel will be dumped in the landfill?

sorry, forgot choices..



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A government wants to deepen a channel with a length of 150 27 Nov 2006, 15:06
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A government wants to deepen a channel with a length of 150 metres and width of 65 metres from 15 metres deep to 25 metres deep. The soil dug out from the channel will be dumped at a landfill, which can absorb an volume of 75,000 cube metres. What percent of the soil from the channel will be dumped in the landfill?

Volume of soil dug out = 65*150*(25-15)=97,500
75,000*100/97,500=76.9%
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MBAlad
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A government wants to deepen a channel with a length of 150 27 Nov 2006, 17:13
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Amount of soil to be removed = 150*65*10 = 97500

100*7500/97500 = 76.9%
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A government wants to deepen a channel with a length of 150 27 Nov 2006, 17:40
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Quote:
What percent of the soil from the channel will be dumped in the landfill?
Show more

percent of soil from the landfill = portion removed/total amount
66% = 97500/146250

what am I missing?
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MBAlad
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A government wants to deepen a channel with a length of 150 27 Nov 2006, 18:05
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You are using 150*65*15 instead of 150*65*10

They want to increase the depth from 15m to 25m which would means increasing the depth by 25-15 = 10m
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A government wants to deepen a channel with a length of 150 28 Nov 2006, 12:27
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I get 77%

percent of the soil from the channel will be dumped in the landfill=
(75000*100)/97500.
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trivikram
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A government wants to deepen a channel with a length of 150 28 Nov 2006, 21:45
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Since the soil dug out is more than the capacity of the landfill

shoudlnt it be 97500/75000*100? = 130% :?
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A government wants to deepen a channel with a length of 150 29 Nov 2006, 07:03
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What percent of the soil from the channel will be dumped in the landfill?

I dont think so because it asks for the % of the total soil removed.



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