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AbhiS101
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Practice Questions Chat 10 Jul 2024, 02:55
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Option 1 & 5 are correct
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PrabhatKC
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Thanks for the clarification
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Soumya___Hariram
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Practice Questions Chat 10 Jul 2024, 02:57
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But option 5 should be X^an ryt?
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AbhiS101
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Practice Questions Chat 10 Jul 2024, 02:58
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Yes, it is a^n not an
I overlooked, it’s not correct
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TheNikunjAgarwal
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Practice Questions Chat 10 Jul 2024, 02:59
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In the end, you will all find that only 1 and 3 are right

if any one wants specific number solution, i will provide. Just tell the number
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AbhiS101
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Bro 3 is not right, it should be at not a^2
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TheNikunjAgarwal
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You are reading wrong.....it is a times

a was added a times

The only basic concept checked in this question is that (x^a)^b is different from x^(a^b)
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Have yoy registered for the BIGGEST GMAT competition of the year?­

$30,000 Prizes at GMAT Club Olympics July 8 -19, 2024­

(Follow the link above and click JOIN in that post)
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AbhiS101
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TheNikunjAgarwal
The only basic concept checked in this question is that (x^a)^b is different from x^(a^b)
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Is this correct expression for option 3m
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TheNikunjAgarwal
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Practice Questions Chat 10 Jul 2024, 03:26
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AbhiS101
Is this correct expression for option 3m
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last 2 parts of your both equations are equal to each other but not equal to first part of the equations
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AbhiS101
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Practice Questions Chat 10 Jul 2024, 03:31
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Yes, it should be X^4...4times for correct expression
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Bunuel
3. the-cost-of- ... 14555.html
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Hello Bunuel. I don’t get it why we multiply 3.8 by 5 in this questions solution
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IIMA-ABHISHEK
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Will anybody help in solving this question

Three mixtures containing water and milk in ratios of 2:3, 4:5 and 3:4 are mixed in a proportion of 5:9:14. Find the fraction of the resulting mixture that needs to be replaced with milk for this mixture to contain 75 per cent milk

Answer is 5/12
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This is how I solved it
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Practice Questions Chat 10 Jul 2024, 06:03
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let the liters be 5, 9 and 14, then milk will be 5*3/5 + 9*5/9 + 14*4/7 = 3+5+8 = 16. So, 16 out of 5+9+14 or 28 liters is milk. But we require milk to be 75% of 28 or 21 liters. So we have to replace 5 liters of water by milk, which means 5/12 of milk, which means 5/12 of mixture
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It’s not letting me attach a pic nvm
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Lokster
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Practice Questions Chat 10 Jul 2024, 06:15
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chetan2u
let the liters be 5, 9 and 14, then milk will be 5*3/5 + 9*5/9 + 14*4/7 = 3+5+8 = 16. So, 16 out of 5+9+14 or 28 liters is milk. But we require milk to be 75% of 28 or 21 liters. So we have to replace 5 liters of water by milk, which means 5/12 of milk, which means 5/12 of mixture
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Here they said we should replace the mixture with milk. Then why only water is considered we can’t simply remove the water know
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If anyone knows, on registering for gmat again , two mocks are provided. Are those same as provided first time or different(questions)
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PrabhatKC
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chetan2u
let the liters be 5, 9 and 14, then milk will be 5*3/5 + 9*5/9 + 14*4/7 = 3+5+8 = 16. So, 16 out of 5+9+14 or 28 liters is milk. But we require milk to be 75% of 28 or 21 liters. So we have to replace 5 liters of water by milk, which means 5/12 of milk, which means 5/12 of mixture
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Excuse me. I didn’t get your solution after, "So we have to replace 5 liters of water by milk. ...
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chetan2u
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Practice Questions Chat 10 Jul 2024, 08:05
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Lokster
Here they said we should replace the mixture with milk. Then why only water is considered we can’t simply remove the water know
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We look for 5/12 of only water as 5/12 of milk is getting replaced by milk. so actually it is 5/12 of entire mix
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