Final answer:
Kingsley's highest possible average without the lowest scoring test would be 100%, assuming that the remaining six test scores were perfect scores.
Step-by-step explanation:
The student scored an average of 69% across 7 tests. To calculate Kingsley's highest possible average without the lowest score, we'll assume the lowest score is substantially less than 69%. If we remove the lowest score, the sum total of the remaining six tests will be higher, and since the total possible points remain the same (each test is worth the same amount), removing the lowest score will increase the average. If the six remaining tests each had a score of 69% or higher, let's assume for the highest possible scenario that they all were 69%. Thus, the highest possible average would remain 69%. However, if any of his test scores were above 69%, the highest possible average is when these six scores are at the maximum of 100%. Hence, (6 tests * 100%) / 6 = 100%, which is the highest possible average for the six tests.