Question

A Supra 2 = b supra 5
b supra 3 = c supra 4
a+b+c=410
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Answer 1

a/2 = b/5          b=5a/2
b/3 = c/4           c=4b/3=4/3×5a/2=10a/3
a+b+c=410
a+5a/2+10a/3=410
6a+15a+20a=2460
41a=2460
a=60
b=5*60/2=150
c=10*60/3=200