T = 1/3 + 1/4 + 1/5
LCM of 3, 4 and 5 is 60 so
T = 20/60 + 15/60 + 12/60 = 47/60
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(2/3) + (4/5) = 22/15 or 1.466 (repeating)
That equals 9.
The answer to that would be 9/10ths
1/6 plus 1/5 plus 1/4 plus 1/3 plus 1/2 = 1 9/20 or 1.45
1/4 plus 1/4 plus 1/3 is = 0.833333