Find out how many bags of rice have been shipped in or shipped out within two days:

a) Day one, 250 bags have been shipped in; Day two, 150 bags have been shipped out.

b)Day one, 100 bags have been shipped out; Day two, 120 bags have been shipped out.

c)Day one, 180 bags have been shipped out; Day two, 140 bags have been shipped in.

d)Day one, 175 bags have been shipped in; Day two, 175 bags have been shipped in.

a) Day one: 250 bags shipped in, Day two: 150 bags shipped out.

To find out how many bags have been shipped in or shipped out within two days, we need to add the quantities from both days:
250 + 150 = 400 bags have been shipped in or shipped out within two days.

b) Day one: 100 bags shipped out, Day two: 120 bags shipped out.
To find out how many bags have been shipped in or shipped out within two days, we need to add the quantities from both days:
100 + 120 = 220 bags have been shipped in or shipped out within two days.

c) Day one: 180 bags shipped out, Day two: 140 bags shipped in.
To find out how many bags have been shipped in or shipped out within two days, we need to add the quantities from both days:
180 + 140 = 320 bags have been shipped in or shipped out within two days.

d) Day one: 175 bags shipped in, Day two: 175 bags shipped in.
To find out how many bags have been shipped in or shipped out within two days, we need to add the quantities from both days:
175 + 175 = 350 bags have been shipped in or shipped out within two days.

To find out how many bags of rice have been shipped in or shipped out within two days, we need to calculate the net change in the number of bags each day.

a) Day one, 250 bags have been shipped in; Day two, 150 bags have been shipped out.

To get the net change, subtract the bags shipped out from the bags shipped in:

Net change = Bags shipped in - Bags shipped out
= 250 - 150
= 100 bags

b) Day one, 100 bags have been shipped out; Day two, 120 bags have been shipped out.

Using the same formula, we find the net change:

Net change = Bags shipped in - Bags shipped out
= 0 - (100 + 120)
= -(100 + 120)
= -220 bags

c) Day one, 180 bags have been shipped out; Day two, 140 bags have been shipped in.

Again, we can calculate the net change:

Net change = Bags shipped in - Bags shipped out
= 140 - 180
= -40 bags

d) Day one, 175 bags have been shipped in; Day two, 175 bags have been shipped in.

Once more, we calculate the net change:

Net change = Bags shipped in - Bags shipped out
= (175 + 175) - 0
= 350 bags

So, the results for each scenario are:

a) Net change = 100 bags (shipped in)
b) Net change = -220 bags (shipped out)
c) Net change = -40 bags (shipped out)
d) Net change = 350 bags (shipped in)

Thus, depending on the scenario, different quantities of bags were either shipped in or shipped out.