exam Maths Puzzle Numerical Ability

How do you solve this problem? :
1/4x+2=3/4x

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exam Other Question

use a unit multiplier to convert 1760 yards to feet Here is my question:

6 - sqrt of 20
-------------- = ?????
2

I came up with 6 - sqrt of 5. I am not sure if this is correct. I need someone to let me know if I am doing this stuff correctly, please.