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Let the speed of the boat be u and that of the stream be v. Then, speed of boat downstream = u + v And speed of boat upstream = u – v From I u + v = 18/3 = 6 km/hr ……….. (i) From II, u – v = 18/6 = 3 km/hr ……… (ii) From statement III, v = u/3 ……….(iii) From I and II, we get u = 9/2 = 4.5 km/hr. From I and III, we get u + u/3 = 6 Or 4u = 18 u = 4.5 km/hr. Hence statement I and either II or III is sufficient to answer the question.
The price of each green pen sold by B, C and D is Rs.5, Rs.10 and Rs.12 respectively. Find the total price of all the green pens sold by these three shops.
Number of umbrellas sold in city B is approximately how much percent of the total number of umbrellas sold in city D?
What is the difference between percentage of marks obtained in Hindi in all semester and the percentage of marks obtained in Geography in all the semest...
Number of chocolates purchased by Amit from shop B is what percent more or less than total number of chocolates purchased from shop D?
If the family decides to increase the expenditure on Education by 20% for the next year, while keeping the expenditure on other categories the same, wha...
Find the number of articles sold by shopkeeper D.
What is the sum of the number of blue pens and black pens sold by shopkeeper B?
If there are two flavors (pista and coconut) of sugar and butter cookies baked on Monday. The number of sugar cookies of pista flavor baked on Monday is...
Which Company has sold the minimum number of vehiclesover the years?
In a biased coin the probability of getting a head is 0.6, if we toss a coin 10times, what is the probability of getting exactly three heads?
