Saturday, 9 June 2018

Daily Numerical Ability Quiz - 9th June 2018

Q1. In a class, there are 480 students out of which 40% students are adults. If ratio of boys and girls among non-adult students is 3 : 1 then find the difference between adults students and non-adult boys.
(a) 24
(b) 28
(c) 20
(d) 18
(e) 26

Q2. The equivalent discount with respect to two successive discounts 30% and 40% will be –
(a) 74% discount
(b) 70% discount
(c) 58% discount
(d) 66% discount
(e) 30% discount

Q3. The difference between S.I. and C.I. on a certain sum for two years is 200. If S.I. on the same sum for two years for the same rate is Rs. 2500 then find the principal sum.
(a) Rs. 8712.5
(b) Rs. 7812.5
(c) Rs. 6812.5
(d) Rs. 7828.5
(e) Rs. 7285.5

Q4. The rate of simple interest for first three years on a certain sum is 12%, for next four years it is 10% and beyond seven years it is 15%. If total S.I. earned on a sum for 10 years is Rs. 36,300. Then find the sum.
(a) Rs. 24,000
(b) Rs. 26,000
(c) Rs. 28,000
(d) Rs. 30,000
(e) Rs. 32,000

Q5. The ratio of efficiency of two persons A and B is 3 : 5. A and B started working together and after 4 days ‘A’ left and another person C joins with B.. If ‘A’ can complete the whole work in 15 days alone, and C alone can complete this work in 20% more time than A alone can complete. then in how many days the whole work will be completed.?
(a) 86/15 days
(b) 8 days
(c) 101/15 days
(d) 54/7 days
(e) None of these

Solutions (1-5):

Q6. A tank can be filled by two pipes P and Q alone in 46 min and 69 minutes respectively. There was a leak in the bottom of the tank which can empty the full tank in 92 min. In how much time this empty tank will be filled if all the three pipes are opened together?
(a) 274 min
(b) 276 min
(c) 276/7 min
(d) 272/7 min
(e) 266/9 min

Q7. The price of sugar is increased by 20% due to which the consumption of sugar is reduced by 25% by a family. Find the percentage change in expenditure on sugar by the family.
(a) 12% increased
(b) 10% decreased
(c) 20% increased
(d) 25% decreased
(e) 30% decreased

Q8. Two trains X and Y start running in the same direction from two different stations P and Q respectively at same instant. The distance between P and Q is 100 m. If speed of train X and Y be 72 km/hr and 54 km/hr respectively and train X crosses train Y in 40 seconds. Find the ratio of length of train X to that of train Y.
(a) 3 : 5
(b) 4 : 3
(c) can’t be determined
(d) 3 : 4
(e) None of these

Q9. Ram can swim twice as fast as Raju. Rishi can swim three times as fast as Raju. If Ram can swim 480 m in 4/3 minutes then find the difference between time taken by Ram and Rishi to swim 480m.
(a) 2 min
(b) 9/4 min
(c) 4/9 min
(d) 3/7 min
(e) 5/6 min

Q10. If Mr. David goes his office by a taxi, he reaches office 15 min late. If he goes by a bus becomes 20 min late. If he goes office by metro, he reaches office on time. If distance between his office from his home is 20 km then find the speed of metro. (speed of bus is 15 km/h) (In all cases the given distance remains same)
(a) 10 km/h
(b) 20 km/h
(c) 25 km/h
(d) 30 km/h
(e) 15 km/h

Solutions (6-10):

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