Q. A can contains a mixture of two liquids A and B in the ratio 7 : 5. When 9 litres of mixture are drained off and the can is filled with B, the ratio of A and B becomes 7 : 9. How many litres of liquid A was contained by the can initially?
1) 10
2) 20
3) 21
4) 25
Q. A and B are two alloys of gold and copper in the ratio 7 : 2 nd 7 : 11, respectively. If equal quantities of these two alloys are melted to form a new alloy C, then the ratio of gold and copper in C is
1) 6 : 5
2) 9 : 4
3) 12 : 7
4) 7 : 5
Q. If there is a reduction in the number of workers in a factory in the ratio 15 : 11 and an increment in their wages in the ratio 22: 25, then the ratio by which the total wages of the workers should be decreased is
1) 6 : 5
2) 5 : 6
3) 3 : 7
4) 3 : 5
Q. A publisher printed 2000 copies of a book at a cost of Rs. 70,000. He distributes 400 copies free as specimen copies. He gave 30% discount on printed price and the printed price of each book is Rs. 75. What is his gain or loss percentage?
1) 20%
2) 20% loss
3) 10% loss
4) 10% gain
Q. Alex sold his goods after announcing two successive discounts of 30% each. The effective discount altogether is
1) 52%
2) 49%
3) 50%
4) 51%
Q. A toy train is marked at Rs. 400 and sold at a discount of 8% during Ganesh Puja. A shopkeeper announces a discount of 8%. The amount he will lose if he announces a single discount of 16% is
1) R. 2.56
2) Rs. 3.84
3) Rs. 4.16
4) Rs. 5.78
Q. Two men undertake a job for Rs. 960. They can complete it in 16 days and 24 days, respectively. They work along with a third man and take 8 days to complete it. The the share of the third man should be
1) Rs. 155
2) Rs. 165
3) Rs. 160
4) Rs. 150
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