Percentage

 Problem : 1 [ Percentage ]       Solve this type of problem 1. A number is 20 % of 80 . Show Answer A: 20 % of 80 = 20 / 100 × 80 = 16.

 Problem : 2 [ Percentage ]       Solve this type of problem 2. 42 is 3 % of some number. Show Answer A: Let 42 is 3 % of X3 / 100 × X = 42=> X = 42 × 100/3=> X = 1400 .

 Problem : 3 [ Percentage ]       Solve this type of problem 3. What percent of 65 is 130 . Show Answer A: Let X % of 65 is 130=> X/100 × 65 = 130=> X = (130 × 100 )/65=> X = 200 %

 Problem : 4 [ Percentage ]       Solve this type of problem 4. A's annual income is increased/decreased from Rs 60000 to Rs 75000 . Find the percentage of increase in A's income. Show Answer A: A's original income = Rs 60000A's new income = Rs 75000=> Increase = Rs 15000=> Increase % = ("Increase")/"Original Income" × 100 = 15000 / 60000 × 100 = 25A's income is increased by 25 %

 Problem : 5 [ Percentage ]       Solve this type of problem 5. In a school of 225 boys, 15 were absent then what percent were present ? Show Answer A: In a school of 225 boys, 15 were absent :. 225 - 15 = 210 were present:. present % = 210 / 225 × 100 = 93.3333 %

Problem : 6 [ Percentage ]       Solve this type of problem
6. A earns 25 % more than B. By what percent does B earn less then A.

 Problem : 7 [ Percentage ]       Solve this type of problem 7. A reduction of 20 % in the price of basmati rice would enable a man to buy 2 kg of rice more for Rs 250 . Find the reduced price per kg. Show Answer A: A reduction of 20 % in the price of basmati rice would enable a man to buy 2 kg of rice more for Rs 250 .:. Reduced price of 2 kg rice = 20 % of Rs 250 = 20 / 100 × 250 = 50:. Reduced price of 2 kg rice = Rs 50:. Reduced price of per kg rice = Rs 25

Problem : 8 [ Percentage ]       Solve this type of problem
8. The price of tea has gone up by 20 %. By how much percent should its consumption be reduced so as not to increase the expenditure?
 Problem : 9 [ Percentage ]       Solve this type of problem 9. Find the selling price of an item, of which the printed price is Rs 25000 if the successive discounts given are 10 %, 8 % and 4 %. Show Answer A: Here, printed price of an item = 25000The amount paid by customer = 90 % of 92 % of 96 % of 25000:. amount after discounts = 25000 × 90 / 100 × 92 / 100 × 96 / 100:. amount after discounts = 19872Hence selling price of an item is Rs 19872 .
 Problem : 10 [ Percentage ]       Solve this type of problem 10. The successive discount of 10 % and 5 % are given on the purchased Computer. If the final price of the Computer is Rs 10260 , then find the printed price of the Computer. Show Answer A: Let the printed price of computer be Rs XThe amount paid by customer = 90 % of 95 % of X:. amount after both the discounts = X × 90 / 100 × 95 / 100:. 10260 = X × 90 / 100 × 95 / 100:. X = (10260 × 100 × 100 ) / (90 × 95) = 12000Hence printed price of the computer is Rs 12000.