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02 Dec 2020, 02:48
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C
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Difficulty:
95%
(hard)
Question Stats:
33% (03:07) correct
67%
(02:30)
wrong
based on 156
sessions
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There are two vessels of milk of different prices, per litre, with the volume of 220 litres and 180 litres, respectively. Equal amounts of milk were poured off simultaneously from the two vessels and the milk poured off from the first vessel was poured into the second vessel and milk poured off from the second vessel was poured into the first vessel. Then the price of milk in both the vessels, per litre, becomes the same. How much milk was poured from one vessel into the other?
A. 80
B. 90
C. 99
D. 160
E. Cannot be determined
Are You Up For the Challenge: 700 Level Questions
A. 80
B. 90
C. 99
D. 160
E. Cannot be determined
Are You Up For the Challenge: 700 Level Questions
There are 2 drums of oil of different prices, their volume being 220 gallons and 180 gallons. Equal quantities are drawn off from the 2 drums. The oil drawn from the first drum is poured into the second drum, and the oil drawn from the second drum is poured into the first drum. Then the price of oil per gallon in both drums becomes equal. How much is drawn from each drum?
09 Feb 2025, 07:50
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A shortcut method which applies just to questions of this pattern.
Quantity of milk poured: (Volume of vessel 1 * Volume of vessel 2) / (Volume of vessel 1 + Volume of vessel 2)
Here,
Q= 220*180/220+180
= 99
Cheers!
Quantity of milk poured: (Volume of vessel 1 * Volume of vessel 2) / (Volume of vessel 1 + Volume of vessel 2)
Here,
Q= 220*180/220+180
= 99
Cheers!
02 Dec 2020, 03:20
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Price per liter of 220L vessel: A
Price per liter of 180L vessel: B
Amount moved from each vessel: L
Equation:
((220-L)*A + L*B)/220= ((180-L)*B + L*A)/180
Solving it gives you a result of L=99
Answer C
Price per liter of 180L vessel: B
Amount moved from each vessel: L
Equation:
((220-L)*A + L*B)/220= ((180-L)*B + L*A)/180
Solving it gives you a result of L=99
Answer C
