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1. A contractor undertakes to make a road in 40 days and employs 25 men. After 24 days he finds that only one third of the road is made. How many extra men should he employ so that he is able to complete the work 4 days earlier?

100

60

75

None of these

2. A pipe of diameter 'd' can drain a certain water tank in 40 minutes. The time taken by a pipe of diameter '2d' for doing the same job is -

5 minutes

10 minutes

20 minutes

80 minutes

3. Find the smallest number to be added to 1000, so that 45 divides the sum exactly, is —

35

80

20

10

4. A six digit number is formed by repeating a three digit number; for example 256256 or 678678 etc. Any number of this form is always exactly divisible by:

7 only

11 only

13 only

1001 only

5. A builder borrows ₹ 2550 to be paid back with compound interest at the rate of 4% per annum by the end of 2 years in two equal yearly instalments. How much will each instalment be?

₹ 1352

₹ 1377

₹ 1275

₹ 1283