Q. How many liters of 27% alcohol solutions is to be added to 20 liters of 36% alcohol solution to obtain a 30% alcohol solution?
A) 30
B) 40
C) 60
D) 50
Q. a dishonest milkman professes to sell his milk at cost price but he mixes it with water and thereby gains 25% the percentage of water in the mixtures is
A) 4%
B) 6 1/4%
C) 20%
D) 25%
Q. A 15 liter mixture of 20% solution in water has 15 liters of water added to it. the strength of the mixture as a percent is
A) 18
B) 10
C) 20
D) 8
Q. A man has three different kinds of milk of 153 litres, 238 litres and 306 itres. find the least number of tins of equal size required to store all the milk without mixing
A) 29
B) 41
C) 51
D) 17
Q. Rs.15000 is invested in two parts in such a way that the first part was lent at 5% p.a and the rest at 8% p.a. if the whole interesr recieved was Rs 9300. in 10 years. find the sum lent at 8% p.a
A) 4000
B) 5000
C) 6000
D) 8000
Today Challenging Question
Q. One pipe ca fill a tank three times as fast as another pipe. If together the two pipes can fill the tank in 36 minutes, then the slower pipe alone will be able to fill the tank in:
A) 144 minutes
B) 120 minutes
C) 9 minutes
D) none
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