Summer Clouds moderators
30/06/2017 at 08:48-
Trần Nhật Dương 30/06/2017 at 14:36Arrcoding to the question, we have the ratio of the salt and fresh water in Protaras is 7:193
=> The ratio of the salt and the sea water = 7:(193+7) = 7:200
First, we exchange: 1000hg=100kg1000hg=100kg (sea water).
Because the ratio of the salt and sea water is 7:200
=> 7kg7kg salt are in 200kg200kg sea water.
200kg200kg sea water are more than 100kg100kg sea water: 200:100=2(times)200:100=2(times)
In 100kg100kg sea water there is: 7:2=3,5(kg)7:2=3,5(kg) salt.
(This question has no answer because there is no 3,5 kg salt.
If there is an answer, you must change 1000hg1000hg sea water -> 1000kg1000kg sea water or change the questions into: How many hectograms of salt are there in 1000hg of sea water)
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The question must be changed from 1000 hg to 1000 kg or 10000 kg
The weigh of salt in 100 kg of sea water is :
1000 : (7 + 193) x 7 = 35 (kg) or 10000 : (7 + 193) x 7 = 350 (kg)
So,the answer depends on how you correct the question (A or E)
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Arrcoding to the question, we have the ratio of the salt and fresh water in Protaras is 7:193
=> The ratio of the salt and the sea water = 7:(193+7) = 7:200
First, we exchange: \(1000hg=100kg\) (sea water).
Because the ratio of the salt and sea water is 7:200
=> \(7kg\) salt are in \(200kg\) sea water.
\(200kg\) sea water are more than \(100kg\) sea water: \(200:100=2\left(times\right)\)
In \(100kg\) sea water there is: \(7:2=3,5\left(kg\right)\) salt.
(This question has no answer because there is no 3,5 kg salt.
If there is an answer, you must change \(1000hg\) sea water -> \(1000kg\) sea water or change the questions into: How many hectograms of salt are there in 1000hg of sea water)