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SashulF [63]
4 years ago
11

Number 13? thanks!!!!

Mathematics
2 answers:
alexgriva [62]4 years ago
3 0
Total of the 6 lawna = 10 + 15 + 12 + 15 + 8 + 15 = $75

Given that the mean is $12 for 7 lawns,
Total of the 7 lawns = 12 x 7 = $84

Therefore the 7th lawn is:

$84 - $75 = $9

---------------------------------------------------------------
Answer: He earns $9 on the 7th lawn. (Answer A)
--------------------------------------------------------------- 
liraira [26]4 years ago
3 0
All you need to do is to find the number than when divided by 7 gives you 12...
7x12 = 84.
Add the current numbers. 10 + 15 + 12 + 15 + 8 + 15 = 75. 
84 - 75 = 9...
9$ the seventh time...

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