Answer:
52
Step-by-step explanation:
I'm pretty sure the answer is 52.
In Jim and Dave each got 5 and David got 4 then :
65/5 = 13
65 - 13 = 52
or
5 4 5
10 8 10
15 12 15
20 16 20
25 20 25
30 24 30
35 28 35
40 32 40
45 36 45
50 40 50
55 44 55
60 48 60
65 52 65
