Triple V,
You are correct that there is a mistake. As the illustration on the left is to show what the illustration on the right is representing then the left one is wrong.
The bevel depth is called out as 7/8" which would be standard if the engineer requires a 3/4" weld as you cannot guarantee a full depth or beyond bevel depth weld. Normal loss is considered to be about 1/8" for most processes. Remember that anything beyond and/or weld reinforcement on the weld crown does not count for engineering. They can only calculate what is average best case scenario. Thus, level with the top of groove and 1/8" less than the depth of bevel.
Looks as though someone got the numbers reversed and editors did not catch it. As I remember, there are at least a couple more mistakes in either the WIT book or the book with the sample questions based on the WIT book modules. Could be around a half a dozen between the two of them. Don't let it bother you too much. As long as you know the symbols and what the represented weld is supposed to look like then it has accomplished it's purpose.
And, it appears you have learned as you caught their mistake. I need to compare this one with the ones I have written down from the previous edition and see if they made the same mistake or a new one.
He Is In Control, Have a Great Day, Brent