The average age of A and B is 22 years. If A is to be replaced by C, the average would be 21 years. The average age of C and A is 23 years. Find the age of A.
A + B = 2 × 22 = 44 yr B + C = 2 × 21 = 42 yr C + A = 2 × 23= 46 yr On adding all three, 2 (A + B + C) = 44 + 42 + 46 = 132 ⇒ A + B + C = 66 ∴ A = (A + B + C) – (B + C) = 66 – 42 = 24 yr
Income of A is 52% of the Income of B and A together. The saving of B is 30% of his Income and equals to Rs. 8100. Find the difference between the incom...
In an examination having total 300 questions, in the first section having 180 questions. A student got 75% marks in first section, but he got 83% marks ...
A batsman scored 120 runs which included 3 boundaries and 8 sixes. What percent of his total score did he make by running between the wickets. ...
A reduction of 20% in the price of cinema tickets would enable me to see 15 movies more for Rs. 1200. Find the original price of one ticket.
The marked price of an article is 30% higher than the cost price. If a trader sells the articles allowing 10% discount to customer, then the gain percen...
In a city, the number of persons travelling by bike is 22.5% the number of persons travelling by metro. The number of persons travelling on foot is 40% ...
Ajay spent 34% of his monthly income on rent and 48% of the remaining on food and the rest amount is saved by him which is Rs. 2574, then find the month...
In an election two candidates participated. 10% voters did not vote. 11(1/9)% votes declared invalid and the winner got 75% of the valid votes. If he wo...
A student has to obtain 35% of the total marks to pass. He got 214 marks and failed by 31 marks. What are the maximum marks?
A girl spent 15% of her monthly income on clothing. Of the remaining, she spent on travel and food in the ratio of 5:3. If the difference of the income ...
