(c) 3/2 d)-1/2 12. if ax = b, by =c and cz = a, then the value of xyz is (b) 1 (d) 1/2 (a) 0 (c) 1/3 the denominator of a rational number is 3 more than its num

(C) 3/2 D)-1/2 12. If aX = b, by =c and cZ = a, then the value of xyz is (B) 1 (D) 1/2 (A) 0 (C) 1/3 The denominator of a rational number is 3 more than its numerator. If the numerator is increased by 7 and the denominator is de- creased by 2, we obtain 2. The rational num- ber is (A) 1/4 C) 7/10 13. 5/8 (D) 8/11 14. If 1 is added to the denominator of a frac- tion, it becomes (1/2) and if 1 is added to the numerator, the fraction becomes 1.The fraction is (A) 4/7 (B) 5/9 (D) 10/11 2/3 Four-fifth of a number is more than three-fourth of the number by 4. The num- 15. ber is (A) 64 (B) 72 (D) 84 A80