22 men can dig a 27 m long trench in one day. How many men should be employed for digging 135 m long trench of the same type in one day ?

If the total weight of 11 identical articles is 77kg, how many articles of the same type would weigh 224 kg?

If a varies inversely to b and b = 12 when a is 8; the value of b when a = 6 is:

1. 72

2. 32

3. 12

4. 16

12 men can make a certain number of screws in 30 days. The number of screws, of the same type will be made by 24 men in:

1. 15 days

2. 30 days

3. 60 days

4. none of these