534,214 views
7 votes
7 votes
10,9,6,7,8,15,14,12,9,10,5

User Shaffooo
by
2.8k points

1 Answer

19 votes
19 votes

Answer:

well if you add one by one that gives you 40 and all 60 by step should help you

User Joseph Dykstra
by
3.2k points
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