Of the recent customers at West Coast Dogs, 30 wanted mustard on their hot dogs and 10 did not. Considering this data, how many of the next 76 customers would you expect to want mustard?

2 answers

how is this geometry?
of the 40 recent customers, 3/4 wanted mustard.
So, what is 3/4 of 76?

Or, as a proportion,
30/(30+10) = x/76
is this the answer?