There are some 50 paisa and some 25 paisa coins in a bag. If the total number of coins is 30 and their total value is ₹ 11, find the number of coins of each kind.

A labourer is engaged for 20 days on the condition that he will receive ₹ 280 for each day he works and will be fined ₹ 60 for each day he is absent. If he receives ₹ 2540 in all, for how many days did he remain absent?

If 5(n - 3) = 4(n - 2), then the value of n is

1. 5
2. 6
3. 7
4. 8