MISCELLANEOUS MCQ SET-17
Q.1 Salil wants to put a picture in a frame. The picture is 7 3/5 cm wide. To fit in the frame the picture cannot be more than 7 3/10 cm wide. How much should the picture be trimmed ? A) 3/9 B) 2/10 C) 3/10 D) 2/9 Ans. C Therefore, picture to be trimmed Thus picture should be trimmed by 3/10 cm Q.2 Suman studies for 5 2/3 hours daily. She devotes 4 2/5 hours of her time for Science and Mathematics. How much time does she devote for other subjects? A) 1 13/15 B) 2 13/15 C) 1 12/15 D) 2 12/15 Ans. B Total time of Suman’s study =5 2/3 hr = 17/3 hr.Time devoted by her for Science and Mathematics = 2 4/5 = 14/5 hr Thus, time devoted by her for other subjects =17/3 – 14/5 hr17 * 5 / 15 – 14 * 3/ 15= 43/15 hr = 2 13/15 hr Q.3 Ritu ate 3/5 part of an apple and the remaining apple was eaten by her brother Somu. How much part of the apple did Somu eat? A) 2/4 part B) 2/5 part C) 2/6 part D) 2/7 part Ans. BThe part eaten by her brother Somu =?Who eat the larger part of apple?The larger part of apple was how much larger?The part of apple left after eaten by RituTherefore, Somu ate 2/5 parts of apple.Now compare the part eaten by them Since, 3>2. Therefore, That means Ritu ate larger part.The difference in both parts Thus,Somu ate 2/5 part of apple.Ritu ate the larger part of appleRitu ate 1/5 part more apple than her brother Somu. Q.4 The denominator of a rational number is greater than its numerator by 8. If the numerator is increased by 17 and the denominator is decreased by 1, the number obtained is 3/2.Find the rational number ? A) 13/ 21 B) 13/20 C) 11/21 D) 11/ 20 Ans. A Acc. to the question, 2(x + 17) = 3(x + 7)⇒ 2x + 34 = 3x + 21⇒ 34 − 21 = 3x − 2x⇒13 = xNumerator of the rational number = x = 13Denominator of the rational number = x + 8 = 13 + 8 = 21
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