Question

A student studied for 1 hour and earned a 50% on her test. If she had studied for 2

Answer 1

You have to double 1 and 50 to get 2 and 100

1:50 = 2:100

1x2=2

50x2=100

So the statement, if she studied for 2 hours, she would have gotten 100%,  makes sense

Hope this helps!