Q1. A contractor undertakes to build a wall in 40 days. He employs 50 people for the same. However after 20 days he finds that only 40% of the work is completed. How many more man need to be employed to complete the work in time?
(a) 25
(b) 30
(c) 35
(d) 20
(e) None of the above
Q2. 10 men can complete a piece of work in 15 days and 15 women can complete the same work in 12 days. If all the 10 men and 15 women work together, in how many days will the work get completed?
ANS - C
Q3. Three pipes A, B and C can fill separately a cistern in 10, 12 and 15 minutes respectively. A was opened first. After 1 minute, B was opened and after 2 minutes from the start of A, C was also opened. Find the time when the cistern will be full?
ANS - C
Q4. There are 15 friends in a group, find the probability that at least two of them are having their birth day on the same week day?
(a) 2/15
(b) 1/2
(c) 1/3
(d) 1
(e) None of the above
ANS - D
Q5. Seven students are to sit at one side of a straight table. Find the probability of two particular students sitting together.
(a) 1/7
(b) 2/7
(c) 3/7
(d) 5/7
(e) None of the above
Q6. How much water be added to 60 litres of milk so that the price of the mixture becomes Rs. 20 per litre. Given that price of the milk is Rs. 25 per litre.
(a) 10 litres
(b) 12 litres
(c) 15 litres
(d) 18 litres
(e) None of the above
ANS - C
Q7. Q is as much younger than R as he is older than T. If the sum of the ages of R and T is 50 years, what is definitely the difference between R and Q’s age?
(a) 1 year
(b) 2 years
(c) 25 years
(d) Data inadequate
(e) None of these
ANS - D
Q8. The simple interest on a sum of money is 4/9 of the principal and the number of years is equal to the rate per cent per annum. The rate per annum is:
ANS - B
Q9. A sum of money is put at compound interest for 2 years at 20% p.a. It would fetch Rs. 964 more, if the interest were payable half-yearly, than if it were payable yearly. Find the sum.
(a) Rs. 40,000
(b) Rs. 50,000
(c) Rs. 30,000
(d) Rs. 45,000
(e) None of the above
ANS - A
Q10. Anita and Bindu can do a job in 16 days and 12 days respectively. 4 days before finishing the job, Anita joins Bindu. Bindu has started the work alone. Find how many days Bindu has worked alone?
(a) 6 days
(b) 4 days
(c) 5 days
(d) 7 days
(e) None of the above
ANS - C
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MAHENDRA GURU