In order to have average 80 score from 5 tests, student needs to have 400 points (80%*500=0.8*500=400)
So far he has 63+72+88+91= 314
400-314=86
He needs to get 86 points from the last test.
Since he is obviously getting better at tests, i think he'll manage :)
Answer:
-21
Step-by-step explanation:
<span>the answer is C) 10; it represents the hourly wage for the worker</span>
Total $19.75
Adding 5%
Taking away 20%
1). $19.75 x 0.20(20%) = 3.95
3.95 + 19.75 = 23.7
2). $19.75 x 0.05(5%) = 0.9875
0.9875 + 23.7 = 24.6875
= 24.6875
