Solution X contains 40% salt and 60% wate… | Answer

Subject

পেট্রোবাংলা

Topic

তিতাস গ্যাস ট্রান্সমিশন এন্ড ডিস্ট্রিবিউশন কো: লি: (সহকারী ব্যবস্থাপক) - ০৮.১০.২০২১

Solution X contains 40% salt and 60% water by weights. Solution Y contains 25% salt and 75% water. If a mixture of X and Y contains 30% salt, what percent of the weight of this mixture is solution X?
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ক)

10%

খ)

33.3%

গ)

40%

ঘ)

42.5%

Explanation

Let x g be the weight of solution X in 100 g of the mixture. Then, the weight of solution Y in 100 g of the mixture = (100 - x) g Mass of salt in the mixture : x (40%) + (100 - x) (25%) = 100 (30%) ⇒ 40x + 2500 - 25x = 3000 ⇒ 15x = 500 ⇒ x = 500/15 = 33.33 Hence, there are 33.33% of solution X in the mixture.

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Solution X contains 40% salt and 60% water by weights. Solution Y contains 25% salt and 75% water. If a mixture of X and Y contains 30% salt, what percent of the weight of this mixture is solution X?Reading

Solution X contains 40% salt and 60% water by weights. Solution Y contains 25% salt and 75% water. If a mixture of X and Y contains 30% salt, what percent of the weight of this mixture is solution X?

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Solution X contains 40% salt and 60% water by weights. Solution Y contains 25% salt and 75% water. If a mixture of X and Y contains 30% salt, what percent of the weight of this mixture is solution X?
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