Question

Darren teaches a class of 25 students. He assigns homework 3 times a week, and each assignment consists of 12 problems. How many problems must Darren correct each week?

Answer 1

25*3*12

there is hmwrk 3 times a week each with 12 problems
so its 3*12=36
So every student has to solve 36 problems a week
now there are 25 students so its 25*36

Answer 2

Problem:
Darren teaches a class of 25 students. He assigns homework 3 times a week, and each assignment consists of 12 problems. How many problems must Darren correct each week?

Here's how I would approach it.
The number of corrected problems = (25 students) X (3 homework assignments per week) X (12 problems per assignment)

Poor Darren - - that's a lot of problems!

Hope that helps? (this is my first day on the site!)
Good luck!