Answer:
20w(p + r)
Step-by-step explanation:
It's readily evident that 5w is common to all three terms. Factoring out 5w, we get:
5w(p + 3p + 4r), or
5w(4p + 4r), or
We can factorize it in the following way...
5wp + 15wp + 20wr = 20wp + 20wr = 20w(p + r)
