If a/b : 7/5, then what will be the value of (5a + 4b)/(5a - 4b) ?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 11/3.
Calculations:
Let the value of a and b be 7x and 5x
⇒ (5a + 4b)/(5a - 4b)
⇒ (5(7x) + 4(5x))/(5(7x) - 4(5x))
⇒ (35x + 20x)/(35x - 20x)
⇒ 55x/15x
⇒ 11/3