Question

1. What is the ratio in which two sugar solutions of concentrations 15% and 40% are to be mixed to get

a solution of concentration 30% ? [ ]

a) 1 : 2 b) 2 : 3 c) 2 : 1 d) 3 : 2


2. 50 gr of an alloy of gold and silver contains 80% gold (by weight). The quantity of gold, that is to be

mixed up with this alloy, so that it may contain 95% gold is [ ]

a) 200 gr b) 150 gr c) 50 gr d) 10 gr


3. If the price of a book is first decreased by 25% and then increased by 20%, the net change in the price

of the book is [ ]

a) 10% decrease b) 5% decrease c) no change d) 5% increase


4. The number whose 40% is 36 is [ ]

a) 60 b) 90 c) 80 d) 120


5. From 5 litres of 20% solution of alcohol in water. 2 litres of solution is taken out and 2 litres water is

added to it. The strength of alcohol in the new solution is [ ]

a) 12% b) 15% c) 16% d) 18%


6. If I would have purchased 11 articles for Rs.10 and sold all the articles at the rate of Rs. 11 for 10, the

profit percent would have been [ ]

a) 10% b) 11% c) 21% d) 100%


7. A shopkeeper offers 10% discount on the marked price of his articles and still makes a profit of 20%.

What is the actual cost of the article marked Rs. 500 for him ? [ ]

a) Rs. 375 b) Rs. 735 c) Rs. 537 d) none of these


8. A man buys an article for Rs. 80 and marks it at Rs. 120. He then allows a discount of 40%. What is the

loss or gain % ? [ ]





9. By selling 24 pens, Kranthi lost an amount equal to the C.P of 3 pens, then his loss percentage is

a) 10% b) 12.5% c) 15% d) 14% [ ]​

Answer 1

Answer:

1. 1:2

2. 150gr

3. 5%decrease

4. 120

5. 15%