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QUESTION : Ramu mixed 40% kerosene solution to 25% kerosene solution hence
obtaining 30% kerosene solution. In what ratio were the both solutions mixed?
3:1
2:3
3:2
2:1
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ANSWER : 2:1
QUESTION : A can contains a mixture of two liquids X and Y in the ratio 7:5
when 9 liters of mixture are drawn off and the can is filled with Y, the ratio
of X and Y becomes 7:9. How many liters of liquid A were contained by the can
initially?
12 Litres
21 litres
13 litres
22 litres
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ANSWER : 21 litres
QUESTION : How many litres of 6% acid solution must be mixed with 120 gallons
of 20% acid solution to obtain an acid solution that is 16%?
24 litres
36 litres
48 litres
54 litres
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ANSWER : 48 litres
QUESTION : Rs. 2250 is divided among three boys named Rama, Krishna and Kalki
in such a way that 1/6th of Rama’s share, 1/4th of Krishna’s share and 2/5th of
Kalki’s share are equal. Find Rama’s share.
Rs. 1080
Rs. 720
Rs. 3600
Rs. 2400
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ANSWER : Rs. 1080
QUESTION : Four numbers are in the ratio 2:3:4:5 add up to give a sum of 1344.
Find the biggest number.
240
540
480
680
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ANSWER : 480
QUESTION : Four numbers are in the ratio 6:7:8:9 add up to give a sum of 1890.
Find the smallest number.
345
378
678
456
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ANSWER : 378
QUESTION : xa=yb=zc and y2=xz. Find b.
2ac/a+c
x(a+c)/yz
a+c/ac
acxyz
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ANSWER : 2ac/a+c
QUESTION : 1/3432/3+1/2162/3+1/321/5=
81
87
97
85
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ANSWER : 87
QUESTION : 5a=15625. Find 5a3
25
121
125
625
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ANSWER : 125
QUESTION : 2xy=8, 2x+y=32. Find x.
4
6
8
12
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ANSWER : 4
