C-11-Q019mediumsingle_mcqIf a:5=8:10a:5 = 8:10a:5=8:10, then a=a =a=a444b555c666d88ব্যাখ্যাFrom a:5=8:10a:5 = 8:10a:5=8:10, cross-multiplication gives 10a=4010a = 4010a=40, so a=4a = 4a=.