A car got two punctures. One can flatten the tire in 9 minutes, and the second can flatten the tire in 18 minutes. How much time will they both take together to flatten the tire?
A sells an article at 20% profit to B; B sells at 10% profit to C. C sells to D at Rs. 16 profit. The difference between D's and A's C.P is 500. Find the amount B paid to A to buy the article.
In an election, there were four candidates: A, B, C, and D. Out of a total of 7,500 votes, 5% were invalid. A got 20% of the valid votes, B got 100% more than A, and D got 40% less than B. How many votes did C receive?
The cost of fencing a square field with the rate of Rs 20 per metre is Rs 10080. How much will it cost to lay a three-metre-wide pavement along the fencing inside the field at a rate of Rs 50 per sq metre?
