In the following figure, rectangle represents Reporters, circle represents Lyricists, triangle represents Potters and square represents Europeans. Which set of letters represents Europeans who are not Potters ?
Manish is four times as efficient as Puneet. Manish takes 90 days less than Puneet to complete a book. If both of them work together, then in how many days the book will be completed?
A man travels 800 km in partly by rail and partly by steamer. He spends 7 hours more time on steamer. If the velocity of the steamer is 20 km/hr and the velocity of rail is 55 km/hr, how much distance does he cover by steamer?