If p/q =4/5, then the value of 4/7 + {(2q

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If p/q =4/5, then the value of 4/7 + {(2q - p) / (2q + p)} is ?

1. 3 / 7
2. 34
3. 1
4. 2

Correct Option: C

Given Exp. = 4 / 7 + {(2q - p) / (2q + p)}
Dividing numerator as well as denominator by q,
Exp = 4/7 + {2-p/q) / (2 + p/q)}
= 4/7 + {(2 - 4/5) / (2 + 4/5)}
= 4/7 + 6/14
= 4/7 + 3/7
=7/7
=1.