Can someone pls help me with this math problem. I have the answer, but i don’t know how to get there. The answer is (26 and A) or (74 and B) Acceptable range is between 20 and 30 for 26, and between 70 and 80 for 74.

Can someone pls help me with this math problem I have the answer but i dont know how to get there The answer is 26 and A or 74 and B Acceptable range is between class=