A:B=2:3,B:C=2:5,且A+B+C=50,则A=( ),B=( )

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A:B=2:3,B:C=2:5,且A+B+C=50,则A=( ),B=( )
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A:B=2:3,B:C=2:5,且A+B+C=50,则A=( ),B=( )
A:B=2:3,B:C=2:5,且A+B+C=50,则A=( ),B=( )

A:B=2:3,B:C=2:5,且A+B+C=50,则A=( ),B=( )
A:B=2:3,B:C=2:5
A:B:C=4:6:15
∵A+B+C=50
∴50÷(4+6+15)=2
A=2×4=8
B=2×6=12
C=2×15=30

A:B:C=4:6:15 设A=4t,则25t=50,t=2,A=8,B=12

A:B=2:3.....A=2B/3
B:C=2:5....C=5B/2
A+B+C=50,
2B/3+5B/2+B=50
4B+15B+6B=300
25B=300
B=12
A=8
C=30