A right circular cone & a right circular cylinder have equal base & equal height. If the radius of the base & the height are in the ratio 8:15, then ratio of total surface area of the cylinder to that of the cone is
Let radius of cylinder & cone be 8x and height of cylinder & cone be 15x. So, slant height = √ (8x 2 + 15x 2 ) = 17x So, required ratio = 2 πR (H + R)/ π r (L + R) = 2(H + R)/(L+ R) = 2(8x + 15x)/(8x + 17x) = 46/25
A fruit seller buys oranges at the rate of 11 for ₹55. How many oranges should he sell for ₹54 to gain 20%?
A man bought an article at 25% less of the marked price and sold it at 15% more than the marked price. Find the profit earned by him.
...Each of the articles is marked 80% above its cost price and a 30% discount was given on it while selling. The selling price of article A is Rs. 126 less...
A trader bought an article for Rs. 900 and marked it 20% above of its cost price. If he sold it after giving a discount of Rs. 45 then find the profit p...
A bought an article at 20% less of the marked price and sold it at 12% more than the marked price. Find the profit earned by him.
Profit percentage received on a product when sold for Rs.550 is equal to the percentage loss incurred when the same product is sold for Rs.420. Find the...
When the printer is sold for Rs. 34000, the owner loses 15%. At what price must that printer be sold in order to gain 15%?
A and B together started a business with initial investment in the ratio of 3:5, respectively. The time-period of investment for A and B is in the ratio...
A bought an article at 12.5% less of the marked price and sold it at 5% more than the marked price. Find the profit earned by him.
The ratio of cost price and selling price of a shirt is 7:8 respectively. The shirt was marked up by 25% above its cost price, and sold after giving Rs....
