Question

If john earns​ 20% more than mary​ does, then mary must earn​ 20% less than john does.

Answer 1

Answer:

The statement not make sense

Explanation:

The question is

Decide rather the following statement makes sense or doesn't make sense. Explain your reasoning

Let

x -----> amount of money John earns

y ----> amount of money Mary earns

we know that

$100\%+20\%=120\%=120/100=1.20$

we have that

$x=1.20y$ -----> equation A

Solve for y

That means -----> isolate the variable y

$y=x/1.20$

$y=0.83x$

$0.83*100=83\%$

$100\%-83\%=17\%$

so

Mary earns 17% less than John

therefore

The statement not make sense