60 kg of a certain variety of rice at Rs 32 per kg is mixed with 48 kg of another variety of rice and the mixture is sold at the average price of Rs 28 per kg. If there be no profit or loss due to the new sale price, then the price of the second variety of rice is
600 students took the test on Physics and chemistry. 35% students failed in Physics and 45% students failed in chemistry and 40% of those who passed in chemistry also passed in Physics, then how many students failed in both :
64329 is divided by a certain number. While dividing, the numbers, 175, 114 and 213 appear as three successive remainders. The divisor is
66 cubic centimetres of silver is drawn into a wire 1 mm in diameter. The length of the wire in metres will be:
7 is added to a certain number, the sum is multiplied by 5, the product is divided by 9 and 3 is Subtracted from the quotient. The remainder left is 12. What is the number?
7^6n- 6^6n, where n is an integer >0, is divisible by
72 % of the students of a certain class took Biology and 44% took Mathematics. If each students took at least one of Biology or Mathematics and 40 students took both of these subjects, the total number of the student in the class is
794.99 ÷ 15.001 + 768.025 ÷ 12.012 - 1273.025 ÷ 18.999 = ?
7X2 is a three-digit number in which X is a missing digit. If the number is divisible by 6, the missing digit is -
8 litres are drawn from a cask filled with wine and is then filled with water. This operation is performed three more times. The ratio of the quantity of wine now left in cask to that of the total solution is 16 : 81. How much wine did the cask hold originally?
