Professor Sum has 56 students.
28 of then study languages - one half
(14 of which study French)
8 study physics - one-seventh
20 do not study at all.
When Professor Sum was asked by Mr. Little how many students were in his classes, he answered,
“All of them study either languages, physics, or not at all. One-half of them study languages only,
one-fourth of them study French, one-seventh of them study physics only, and 20 do not study at
all.” How many students does Professor Sum have?
1 answer
0 answers