Question

IN Mr. Prime's class, 9/10 of the students had done thier homework. Of these, 2/3 had all correct answers. WHat fraction of the whole class has all correct answers?

Answer 1

Multiply 9/10 by 2/3:

9 * 2 3*1

--------- = --------- = 3/5 (answer)

10*3 5*1

Three fifths of the whole class has all-correct answers.