Question

If 3A= 4B=5C.Find A:B:C.

Please try to give the answer fast please......​

Answer 1

let 3A=4B=5C be x

then A=x/3

then B =x/4

then C=x/5

Therefore, A:B:C = x/3:x/4:x5

= 1/3:1/4:1/5 [LCM of 3,4,5 is 60]

= 1/3*60:1/4*60:1/5*60

=20:15:12