1. A student was asked to divide a number by 6 and add 12 to the quotient. He, however, first added 12 to the number and then divided it by 6, getting 112 as the answer. The correct answer should have been

(a) 124
(b) 122
(c) 118
(d) 114

2. Four runners started running simultaneously from a point on a circular track. They took 200 seconds, 300 seconds, 360 seconds and 450 seconds to complete the round. After how much time to they meet at the starting point for the first time?

(a) 1800 seconds
(b) 3600 seconds
(c) 2400 seconds
(d) 4800 seconds

3. ‘x’ number of men can finish a piece of work is 30 days. If there were 6 men more, the work culd be finished in 10 days less. The original number of men is

(a) 6
(b) 10
(c) 12
(d) 15

4. A work can be completed by P and Q in 12 days, Q and R in 15 days, R and P in 20 days. In how many days P alone can finish the work?

(a) 10
(b) 20
(c) 30
(d) 60

5. A is thrice as good a workman as Band is, therefore, able to finish a 33.4: Practice Set: 33 piece of work in 60 days less than B. The time (in days) in which they can do it working together is

(a) 22
(b) 45/2
(c) 23
(d) 93/4

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Answers:
1. (b) 2. (a) 3. (c) 4. (c) 5. (b)