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Start learning 50% faster. Sign in nowLet the speed of boat in still water be x km/hr and that of stream be y km/hr. ATQ, ⇒ (x + y) – (x – y) = 4 ⇒ y = 2 km/hr ⇒ x = 2 × 5/2 = 5 km/hr Required time = [42/(5+2)] + [30/(5−2)] = 16 hr
Monthly income of A is Rs. 55000 out of which he spent 21%, 9% and 22% of his total income in rent, medicine and transportation, respectively. Find his ...
If the numerator of a fraction is increased by 16.66 % and denominator decreased by 14.28 % then, it becomes the reciprocal of itself. Find the original...
Rajesh spent 45% and 20% of his monthly salary on food and rent, respectively. Of the remaining amount, he gave 16% and 25% to his mother and brother, r...
Rahul saves Rs. 5800 more if he spends 55% of his income instead of 75%. Find the savings of Sumit whose income is 20% more than that of Rahul, and spen...
A candidate who gets 28% marks fails by 10 marks but another candidate who gets 42% marks gets 12% more than the passing marks. Find the maximum marks.
In a village election between two candidates, the winner secured 65% of the total votes cast and won by a majority of 9000 votes. How many votes did the...
Rahul saves Rs. 7200 more if he spends 65% of his income instead of 85%. Find the savings of Sumit whose income is 25% more than that of Rahul, and spen...
