Question

Your test scores are 85 and 89 what possible scores can you earn on your next test to average between 87 and 91 inclusive?

Answer 1

85,100

Explanation:

85 <= (81 + 89 + x) / 3 <=90

255 <= 81 + 89 + x <=270

255 <= 81 + 89 + x <=270

174 <= 89 + x <= 189

85 <= x <= 100

x = 85, 100