Capgemini Company Numerical Ability Ratio and Proportion

At the college entrance exam, a candidate is admitted according to whether he has passed or failed the
test. Of the candidates who are really capable, 80 % pass the test and of the incapable, 25 % pass the test.
Given that 40 % of the candidates are really capable, then the proportion of the really capable students who
can pass the test to the total students who can pass is about

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Capgemini Other Question

Two electronic musical instruments were purchased for Rs. 8000. The first was sold at a profit of 40% and the second at a loss of 40%. If the sale
price was the same in both the cases, what was the cost price of the electronic musical instruments?
In a Triangle ABC , AD is perpendicular to BC ,BD is 15m,and angle B is 30 degree, find AC?