A town's population is 47,500. about 100 people move out of the town each month. each month, 200 people on average move into town. a nearby town has a population of 51, 250. it has no one moving in and an average of 150 people moving away every month. in about how many months will the populations of the towns be equal? write an equation to model the situation.

which equation models the situation?
a.
200m -100m + 47,500 = 51,250- 150m
b.
200m + 100 m + 47,500 = 51,250 + 150m
c.
200m + 100m + 51,250 + 47,500 + 150m
d.
200m - 100m + 51,250 = 47,500 - 150m