Question

a+b+c+d=56
a:b=3
c:a=2
a=4×4
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Answer 1

a=4x4=16
c:a=2=>c=2a=>c=2x16=>c=32
a:b=3=>a=3b=>16=3b=>b=16:3=>b=5,33
a+b+c=16+5,33+32=53,33
d=56-53,33=2,67