The price of an article increases by `10%, 15%and 20%` in 3 consecutive weeks. What is the appeoximate overall percentag increase for the 3 weeks ?

Side of a square is first increased by 10% and then decreased by 20%. What is the overall percentage change in area ?

The length and breadth of a rectangle are increased by 20% and 10% respectively. What is the percentage increase in the area of the rectangle ?

The price of an article was first increased by 10% and then again by 20%. If increased price by Rs.33, the original price be

When the price of an article is increased by 15% the number of articles aold decreases by 20% What is the percentage change in the sales revenue? (Sales revenue = piece of each article X number of articles sold).