Leo needs to get a minimum of 68% on his final math test, which amounts to option D.
Leo’s score for the first four math tests is an average of 70.5%, or 71% rounded.
81 + 82 + 56 + 63 = 282
Leo needs an average of at least 70% on all five tests, so:
70 • 5 = 350
Subtracting the minimum total scores (350) by the sum of the first four math tests (282), we will find that:
350 - 282 = 68
Therefore, Leo needs to score a 68% at the bare minimum to average at least a 70% on all five tests.
