Think of the equation as the 10 times as parts so if Halle read ten times as more than Janet then we do the equation 264/11 because we have to include Janet's part too so Janet read 24, one part of the total while Halle read 240, 10 parts of the total
I know its a long problem but i have to shiw how i got my answer.
A ratio equivalent to 3/20 can be 6/40 or even 9/60
The correct answer is two thirds