Answer:
D
Step-by-step explanation:
The ratio of the first 3 is 2:4:8
And 50,000:100,000:200,000 is equivalent to that.
You're multiplying by 2
2*2=4*2=8 and
50,000*2=100,000*2=200,000
And if you add the first 3 and the 4th one's profit you get 400,000
50,000+100,000+200,000+50,000= 400,000
