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 hr
17 * 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. B
The 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 Ritu
Therefore, 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 apple
Ritu 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 = x
Numerator of the rational number = x = 13
Denominator of the rational number = x + 8 = 13 + 8 = 21
