Question

If a : b : c = 3 : 4 : 5, find the value of 3a - 4c / 2a - b + 4c

Answer 1

Answer:

answer is. -11 upon -10

Step-by-step explanation:

Answer 2

Answer:

Step-by-step explanation:

As the value of the ratio can be anything we can multiply the number into x

So we get

• a:b:c = 3x:4x:5x

Replacing variables -

• =  {(3  x 3x) - (4 x 5x)}  ÷ { 2 x 3x) - 4x + (4 x 5x)}
• =  {9x - 20x} ÷ {6x - 4x + 20x}
• = -11x / -22x
• = 1/2