4 workers produce 1400 toys in 5 days. After one days work was over, 14 more workers joined them. In how many days can they complete the remaining work?

1)  2

2)  3

3)  4

4)  3 1/2

A man borrowed Rs. 500 at simple interest at 3% per annum and Rs. 600 .at '4Y2% per annum on a condition that the total sum will be paid back when total interest amounts to Rs. 126. Find the number of years after which the sum has to be paid back?

1)  2

2)  3

3)  4

4)  5