+7 would be the answer i believe
Ok, so you automatically know that you are subtracting 6 from 10 to get 4. So, in order to figure out how it is 1/3 of that number, it is going to be multiplied by 3, getting 18. So, the number would be 18.
What are you trying to find?
The greatest value shown on the dot and whisker plot is c. 50