Max has a science test on thursday. on monday he studied 2/9 of the material. on tuesday he studied 1/4 of the remaining material. what fraction has he reviewed already and what fraction does he have left to study?

The answer to your question is:

Fraction he has review =  17/36

Fraction he have to study = 19/36

Step-by-step explanation:

Data

Monday studied = 2/9

Tuesday = 1/4

Fraction he has review = ?

Fraction he has left = ?

Process

As the denominator is 9, consider the whole is 9.

Then:    Fraction left on Monday = 9/9 - 2/9

                                                      = 7 / 9

Fraction left on Tuesday = 7/9 - 1/4

                                         = (28 - 9) / 36

                                        = 19 / 36

Fraction he has review =  17/36

Fraction he have to study = 19/36