On last weeks's math test, 32 students received passing grades and 16 students did not receive passing grades. What is the ratio of the number of students who passed the test to the total number of students who took the test

A. 1/2
B. 2/3
C. 3/2
D. 2/1

To find the ratio of the number of students who passed the test to the total number of students who took the test, we divide the number of students who passed by the total number of students.

The number of students who passed the test is 32.
The total number of students who took the test is 32 + 16 = 48.

Dividing the number of students who passed by the total number of students, we get: 32/48 = 2/3.

Therefore, the ratio is 2/3.

The correct answer is B. 2/3.