A shop sells floor tiles at Rs 48 per square meter. A contractor employs a machine that polishes the tiles that damages 10% of the total number of tiles which cannot be used any more. Calculate the amount that needs to be paid by contractor to tile shop owner, if the hall is of a square shape and has a perimeter of 400 meters?
Chhavi Jain from Jaipur, India is saying Rs 5,00,000 is correct answer
If the price of a commodity is decreased by 20% and its consumption is increased by 20%, what will be the increase or decrease in expenditure on the commodity?
- [A] 4% increase
- [B] 4% decrease
- [C] 8% increase
- [D] 8% decrease
A college has raised 75% of the amount it needs for a new building by receiving an average donation of Rs. 600 from the people already solicited. The people already solicited represent 60% of the people, the college will ask for donations. If the college is to raise exactly the amount needed for the new building, what should be the average donation from the remaining people be solicited?
- [A] 300
- [B] 250
- [C] 400
- [D] 500