(a) Rs. 8400
(b) Rs. 16800
(c) Rs. 9450
(d) Rs. 16200
Q2. A tap can empty a tank in one hour. A second tap can empty it in 30 minutes. If both the taps operate simultaneously, how much time is needed to empty the tank?
(a) 20 minutes
(b) 30 minutes
(c) 40 minutes
(d) 45 minutes
Q3. Two taps can fill a tank in 4 hours and 6 hours, respectively. A third tap can empty the tank in 3 hours. If all the three taps are opened how much time will it take to fill the tank?
(a) 3 hours
(b) 9 hours
(c) 12 hours
(d) 24 hours
Q4. A pump can fill a tank with water in 2 hours. Because of a leak in the tank it was taking 7/3 hours to fill the tank. The leak can drain all the water off the tank in:
(a) 8 hours
(b) 7 hours
(c) 41/3 hours
(d) 14 hours
Q5. Two numbers are 40% and 60% less than a third number. These two numbers are in ratio?
(a) 3: 2
(b) 3: 4
(c) 1: 2
(d) 3: 5
Q7. If the volume of a right circular cone of height 9 cm is 48 π cm^3, then find the diameter of its base.
(a) 8 cm (b) 4 cm
(c) 7 cm
(d) 11 cm
Q8. Pranab’s cap is in the form of a right circular cone of base radius 7 cm and height 24 cm. Find the area of the sheet required to make 5 such caps.
(a) 5000 sq cm
(b) 2750 sq cm
(c) 3000 sq cm
(d) 2700 sq cm
Q10. If a train 110 m long passes a telegraph pole in 3 seconds, then the time taken by it to cross a railway platform 165 m long is-
(a) 3 sec
(b) 4 sec
(c) 5 sec
(d) 7.5 sec
Q11. Two men can do a piece of work in x days. But y women can do it in 3 days. Then the ratio of the work done by 1 man and 1 woman is:
(a) 3y : 2x
(b) 2x : 3y
(c) x : y
(d) 2y : 3x
Q12. 37 (1/2)% of the candidates in an examination were girls, 75% of the boys and 62 (1/2)% of the girls passed and 342 girls failed. The number of boys failed was:
(a) 350
(b) 360
(c) 370
(d) 380
Q13. Work done by A in one day is half of the work done by B in one day. Work done by B is half of the work done by C in one day. If C alone can complete the work in 7 days, in how many days can A, B and C together complete the work?
(a) 28
(b) 14
(c) 4
(d) 21
Q14. B and C together can complete a work in 8 days, A and B together can complete the same work in 12 days, and A and C together can complete the same work in 16 days. In, how many days can A, B and C together complete the same work?
(a) 39/13
(b) 96/13
(c) 75/12
(d) 35/12
Q15. 7 men can complete a piece of work in 12 days. How many additional men will be required to complete double the work in 8 days?
(a) 28
(b) 21
(c) 14
(d) 7
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