Akshay has 30 articles, each having the same cost price. He marked the price of each article at 30% above its cost price. He sold 15 of the articles at a discount of 20% each, and the remaining 15 articles at a discount of 10% each, thereby gaining a total profit of βΉ630. What was the cost price of each article?
What is the value of \([7 \div 14 \times 8 + (5 \div 15 \times 6 - 4 \times 3)]\)
The volume of a cone is 27720 cm3 If the height of the cone is 20 cm, then what will be the area of the base?