There are 60 students in the speech contest. Yesterday, 2/3 of them gave their speeches. Today, 1/4 of the remaining students gave their speeches. How many students still haven't given their speeches?

I'm pretty sure it's 15

15

Step-by-step explanation:

60 x 2/3 = 120/3 which is 40 students that gave their speech the first day

Second day there are 20 students left to speak.

20 x 1/4 = 20/4 which is 5 students that gave their speech.

Now there are 15 students left to give their speech