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 total cost price of a certain number of identical articles is ₹ 4800. By selling the articles at ₹ 100 each, a profit equal to the cost price of 15 articles is made. Find the number of articles bought.

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

The lengths of a rectangle is 3 m more than its width. If its area is 180 m²; the length of the rectangle is :

1. 12 m

2. 9 m

3. 15 m

4. 10 m