Q2. The price of a commodity rises from Rs. 6 per kg to Rs. 7.50 per kg. If the expenditure cannot increase, the percentage of reduction in consumption is:
Q3. The market price of a watch is Rs. 800. A shopkeeper gives two successive discounts and sells the watch for Rs. 612. If the first discount is 10%, then the second discount is:
Q4. A sum of money becomes Rs. 4500 after two years and Rs. 6750 after 4 years on compound interest. The sum is:
(a) Rs. 4000
(b) Rs. 2500
(c) Rs. 3000
(d) Rs. 3050
Q5. A sum of Rs 731 is distributed among A, B and C, such that A receives 25% more than B and B receives 25% less than C. What is C’s share in the amount?
Q6. A takes twice as much time as B or thrice as much time as C to finish a piece of work. Working together, they can finish the work in 2 days. B can do the work alone in:
(a) 6 days
(b) 12 days
(c) 8 days
Q7. The average of two numbers is 62. If 2 is added to the smaller number, the ratio between the numbers becomes 1 : 2. The smaller number is:
Q8. With an average speed of 40 Km/h, a train reaches its destination on time. If it goes with an average speed of 35 Km/h, it reaches late by 15 minutes. The total journey is:
(a) 30 Km
(b) 40 Km
(c) 70 Km
(d) 80 Km
Q9. In a competitive examination, the average marks obtained was 45. It was later discovered that there was some error in computerization and the marks of 90 candidates had to be changed from 80 to 50, and the average came down to 40 marks. The total number of candidates appeared in the examination is:
Q10. In a 729 litres mixture of milk and water, the ratio of milk to water is 7 : 2. To get a new mixture containing milk and water in the ratio 7 : 3, the amount of water to be added is
A. 81 litres
B. 71 litres
C. 56 litres
D. 50 litres
Q12. In a recent survey, 40% houses contained two or more people. Of these houses containing only one person, 25% were having only a male. What is the percentage of all houses, which contain exactly one female and no males?
(d) Can’t be determined
Q14. A printer P can print one lakh books in 8 hours, printer Q can print the same number of books in 10 hours while printer R can print them in 12 hours. All the printer are started at 9 a.m. while printer P is closed at 11 a.m. and the remaining two printers complete the work. Approximately at what time will the work be finished?
(a) 11:30 a.m.
(b) 12 noon
(c) 12:30 p.m.
(d) 1 p.m.
Q15. If 12 men and 16 boys can do a piece of work in 5 days; 13 men and 24 boys can do it in 4 days, then the ratio of daily work done by a man to that of a boy is:
(a) 2 : 1
(b) 3 : 1
(c) 3 : 2
(d) 5 : 4