Q1. A bag contains 5 blue marbles and 3 white marbles. If two marbles are picked out randomly from the bag, then find the probability of getting both white marbles?
(a) 3/28
(b) 4/7
(c) 2/25
(d) 5/28
(e) None of the above.
Q2. Average weight of a group of 50 people is 60 kg. If ratio of male to female in the group is 3:2 and average weight of all males of the group is 70 kg, then find average weight of all females of the group.
(a) 42 kg
(b) 45 kg
(c) 40 kg
(d) 48 kg
(e) 50 kg
Q3. B is five years younger than A and A is five years younger than C. If sum of ages of A & B eight years hence will be 46 years, then find the present age of C.
(a) 17.5 years
(b) 22.5 years
(c) 12.5 years
(d) 25 years
(e) 20 years
Q4. A train crosses a man running with speed 8 km/hr. in 20 seconds, while running in opposite direction. If the length of train is 400 meters, then find the speed of the train.
(a) 72 km/hr.
(b) 52 km/hr.
(c) 57 km/hr.
(d) 62 km/hr.
(e) 64 km/hr.
Q5. Ratio of cost price to marked price of an article is 8:11 and shopkeeper allowed 20% discount on marked price. If shopkeeper earned profit of Rs.40 on selling the article, then find amount of discount allowed on the article. (in Rs.)
(a) Rs.120
(b) Rs.110
(c) Rs.105
(d) Rs.125
(e) Rs.115
Solutions
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