A, B and C together can complete a work in 15 days and A alone can complete a work in 45 days and C alone can complete a work in 36 days. If B and C started the work together and B increases its efficiency by 100% and C decreases its efficiency by 40%, then […]
A bag has 6 black balls, 4 red balls and 8 white balls. If two balls are drawn at random, then find the probability that it contains no black balls. a) 5/8 b) 4/91 c) 1/33 d) 22/51 e) None of these Sol: Number of Non black balls = 4 + 8 = 12 Required
Ram invested Rs.4500 in SI at (R + 4)% rate of interest per annum for n years and Jegan invested Rs.7500 in CI at R% rate of interest per annum and after 4 years, the total amount obtained by him is Rs.15552. Find the time period of investment of Ram, if Ram obtained an interest
In School A, 60% are boys and the number of girls in School B is 25% less than the number of boys in School A and the number of girls in School C is 60 more than that of School B and the total number of students in school B is 1300. Find the number
Ratio of the present age of Mike to the age of Mahira after 6 years is 3:4 and the average of the present age of Mike and Mahira is equal to the age of Max after 6 years. If Mike is 4 years elder than Max, then find the difference between the age of Mahira
Vessel A contains a mixture of milk and water and vessel B contains a mixture of 240 liters mixture of milk and water in the ratio of 7:5 and the total quantity of vessel A and 60% of the mixture of vessel B are mixed together in a new empty vessel, then the ratio of
Train A crosses train B running in the same direction in 67.5 seconds and the speed of train A and B is in the ratio of 3:2 respectively. If the difference between the speed of train A and B is 24 kmph, then what is the time taken by train A to cross train B
Homer, Shiv and Bern started a business. If the investment of Bern is 25% more than that of Shiv and the investment of Homer is 25% less than that of Shiv and at the end of the business, Homer’s profit is half of the profit share of Bern and the profit share of Shiv is
(√840 ÷ 348.19) * (456.09 ÷ √360) * ? * 7.91= √2300 A. 3 B. 5 C. 7 D. 1 E. 8 Sol: (√840 ÷ 348.19) * (456.09 ÷ √360) * ? * 7.91 = √2300 29/348 * 456/19 * 8 * ? = 48 ? = 3
(√840 ÷ 348.19) * (456.09 ÷ √360) * ? * 7.91= √2300 Read More »
Direction: What value should come in the place of (?) in the following questions. √480 * ?2 = (17.89 ÷4.95) * (19.98 * √9800) A. 15 B. 18 C. 21 D. 12 E. 23 Sol: √480 * ?2 = (17.89 ÷4.95) * (19.98 * √9800) 22 * ?2 = 18/5 * 20 * 99 ?
