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Sagot :
Answer:
- 91
Step-by-step explanation:
The mean the the average of 5 numbers. If the next score is x, then the mean is:
- (85 + 78 + 77 + 69 + x)/5 = 80
Solve it for x:
- 309 + x = 80*5
- x = 400 - 309
- x = 91
It is given that,
The mean is the average of 5 numbers.
Then if the,
Next score is x the mean will be.
We can solve now,
→ (85 +78 +77 + 69 + x)/5 = 80
→ (309 + x)/5 = 80
→ 309 + x = 80 × 5
→ 309 + x = 400
→ x = 400 - 309
→ x = 91
Hence, the next score is 91.
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