78. The sum of the numerator and denominator of a fraction is 11. If 1 is added to the numerator and 2 is subtracted from the denominator, it becomes 2/3. The fraction is :

A.5/6

B.6/5

C.3/8

D.8/3

79. The denominator of a fraction is 3 more than the numerator. If the numerator as well as the denominator is increased by 4, the fraction becomes 4/5. What was the original fraction.

A.8/11

B.5/8

C.10/13

D.7/10

80. The numerator and denominator of a fraction are in the ratio of 2 : 3. If 6 is subtracted from the numerator, the result is a fraction that has a value 2/3 of the original fraction. The numerator of the original fraction is :

A.6

B.18

C.27

D.36

81. If 1 is added to the denominator of a fraction, the fraction becomes1/2 . If 1 is added to the numerator of the fraction, the fraction becomes1. The fraction is :

A.1/3

B.2/3

C.3/4

D.3/2

82. If the numerator of a fraction is increased by 2 and the denominator is increased by 3, the fraction becomes 7/9 and if both the numerator as well as the denominator are decreased by 1, the fraction becomes 4/5. What is the original fraction ?

A.5/6

B.9/11

C.13/16

D.17/21

83. When the numerator of a fraction increases by 4, the fraction increases by 2/3. The denominator of the fraction is :

A.2

B.3

C.4

D.6

84. 54 is to be divided into two parts such that the sum of 10 times the first and 22 times the second is 780. The bigger part is :

A.24

B.34

C.30

D.32

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