Question

Harry has test grades of 85, 87, and 77 on his first three algebra tests. What must he get on his
fourth test to earn an average of at least 84?

Answer 1

85 + 87 + 77 = 249 > Henry's points to date.

The total points for four tests = 400

400 * 0.84 = 336

336 - 249 = 87

Answer 2

87