Question

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Answer 1

12. Length of rope = 65/2 m.
length of piece which was cut = 13/4
let 'y' pieces be cut.
⇒ 13/4 × y = 65/2
⇒ y = 65/2 × 4/13 
⇒ y = 10

13. If the man has 'x' amount of land.
Sold portion = x/2
Portion given to son = x/2 × 1/2 = x/4
Portion given to daughter = x/2 × 1/3 = x/6
Remaining portion = x - x/2 - x/4 - x/6
                              = x/12
∴ 1/12 portion of his land is remaining with him.

14.  To get -1 we must divide -2/9 by2/9.
Let x be the number.
⇒ -2/9 × x = -1
⇒ x = 2/9.

15. Yes, both -5/7 and 5/-7 represent the same negative rational number.
Because their values are the same

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