Question

if 50% of x equals the sum of y and 20, then what is the value of x–2y?

Answer 1

First of all, we need to understand the meaning of –. – stands for minus sign.

Now, according to the question,

x*50/100=y+20

x/2=y+20

x=2y+40

x-2y=40 or  

x–2y=40

Therefore, the value of x–2y is 40.

Answer 2

Question -

If 50% of x equals to the sum of y and 20 then what is the value of x - 2y?


Answer : $\bold{X - 2Y \: = \: 40}$


Explanation-


$50\% = \dfrac{50}{100} = \dfrac{1}{2}$


According to the given question -


50% of x = y + 20


$x \times \dfrac{1}{2} = y + 20$


$\dfrac{x}{2} = y + 20$


$x = 2y + 40$


$x - 2y = 40$