An employer finds that if he increases the weekly wages of each worker by ₹ 5 and employs five workers less, he increases his weekly wage bill from ₹ 3150 to ₹ 3250. Taking the original weekly wage of each worker as ₹ x; obtain an equation in x and then solve it to find the weekly wages of each worker.

A trader bought a number of articles for ₹ 1200. Ten were damaged and he sold each of the remaining articles at ₹ 2 more than what he paid for it, thus getting a profit of ₹ 60 on the whole transaction.

Taking the number of articles he bought as x, form an equation in x and solve it.

The sum of two whole numbers is 18 and their product is 45, the numbers are :

1. 15 and 3

2. -15 and -3

3. -15 and 3

4. 15 and -3