81.

Pooja wants to sell a watch at a profit of 20%. She bought it at 10% less and sold it at ₹ 30 less, but still she gained 20%. The cost price of watch is 

• ₹ 240

• ₹ 220

• ₹ 250

• ₹ 250

A shopkeeper sold his goods at half the list price and thus lost 20%. If he had sold on the listed price, his gain percentage would be

• 60%

• 20%

• 72%

• 72%

Two types of tea costing ₹ 180 per kg and ₹ 280 per kg should be mixed in the ratio so that the mixture obtained, sold at ₹ 320 per kg to earn a profit of 20% is

• 3 : 13

• 1 : 13

• 4 : 13

• 4 : 13

A profit of 12% is made when a mobile phone is sold at ₹ P and there is 4% loss when the phone is sold at ₹ Q. Then Q : P is

• 1 : 1

• 4 : 5

• 6 : 7

• 6 : 7

A sells a cycle to B at a profit of 20% and B sells it to C at a loss of 25%. If C bought the cycle for ₹ P, then the cost price of it for A was

A man buys a toy for ₹ 25 and sells it for ₹ 30. His gain per cent is

• 20%

• 5%

• 10%

• 10%

From 1980 - 1990, the population of a country increased by 20%.
From 1990 - 2000, the population of the country increased by 20%.
From 2000 - 2010, the population of the country increased by 20%.
Then the overall increased population (in percentage) of the country from 1980 -2010 was

• 72.2 %

• 60 %

• 72.8 %

• 72.8 %

A supply of juice lasts for 35 days. If its use is increased by 40% the number of days would the same amount of juice lasts, is

• 25 days

• 30 days

• 24 days

• 24 days

A store offers a variety of discounts that range between 20% and 25% inclusive. If a book is discounted to a price of ₹ 270, then its greatest possible original price was

• ₹ 345.5

• ₹ 324

• ₹ 360

• ₹ 360

If the ratio of cost price to selling price is 10 : 11, then the rate of per cent of profit is 

• 1.1%

• 0.1%

• 10%

• 10%