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2711.5 years ago, the average age of A, B, C and D was 45 years. With E joining them now, the average age of all the five is 49 years. How old is E ?
2712.The speed of a boat in upstream is 60 kmph and the speed of the boat downstream is 80 kmph. Find the speed of the boat in still water and the speed of the stream?
2713.A man can row downstream at 18 kmph and upstream at 10 kmph. Find the speed of the man in still water and the speed of stream respectively?
2714.The average marks in mathematics scored by the students of a school at the public examination were 39. If four of these students who actually scored 5, 12, 15 and 19 marks at the examination had not been sent up, the average marks for the school would have been 44. Find the number of students sent up for examination from the school?
2715.Calculate the Average of: 22, 33, 44, 55, 66
2716.Divide 180 in the ratio 1: 3: 8 =?
2717.Sameer gets 75 marks in English, 85 marks in Computer Science and 90 marks in Mathematics respectively out of 100 each subject. His percentage is
2718.(2 + 4 * 3 - 5) / 3=?
2719.The area of the circle is ________?
2720.A right circular cylinder of radius r cm and height h cm (h>2r) just encloses a sphere of diameter?