maybe it has more than one good solution, but why complicate it?4+4=16
5+5=20
6+6=24
Then 6+4 will be more then 16 and less then 24, not have time to do calculation but it's range is 16-20.
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maybe it has more than one good solution, but why complicate it?
if
5+5=20 (10x2)
6+6=24 (12x2)
7+7=28 (14x2)
8+8=32 (16x2)
then
6+4=20 (10x2)