A:B=2:3 এবং B:C=4:5 হলে A:B:C = কত ? Madhyamik 2010


A:B=2:3=(2\(\times\)4):(3\(\times\)4)=8:12
B:C=4:5=(4\(\times\)3):(5\(\times\)3)=12:15
\(\therefore\) A:B:C=8:12:15

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