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P, Q and R entered into a partnership with an investment of Rs.4500, Rs.6000 and Rs.5000 respectively and after x months, P increased its investment by 20% and Q withdrew Rs.1000 from its investment and at the end of one year, the ratio of the profit obtained by P, Q and R is 72:85:75. Find the ...

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 find the time taken by B and C together ...

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 probability =12c2/18c2= (12*11) / (18 * 17) ...

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 of Rs.5400. ...

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 of boys in School B, if the average number of ...

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 before 6 years and the present age of ...

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 the milk to water becomes 6:5. ...

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 running in the opposite direction? ...

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 6(2/3)% more than the ...

(√840 ÷ 348.19) * (456.09 ÷ √360) * ? * 7.91= √2300 A.            3 B.            5 C.            7 ...