Question

There are 54 students in a speech contest. yesterday, 2/3 of them gave their speeches. today, 1/3 of the remaining students gave their speeches. how many students still haven't given their speeches?

Answer 1

18 students have not given their speeches.
54 divided by 3= 18.

Answer 2

54 × ⅔ = 36 students
54 - 36 = 18 students
18 × ⅔ = 12 students