MI/SM = TM / RM
15 / 20 = 9 / RM
RM = 20 * 9 / 15
RM = 12
Answer
RM = 12 m
Hello,
MT/MR = MI/MS = TI/RS
9/MR = 15/20
Proportionality :
15 => 9
20 => ?
20 * 9 / 15 = 180 / 15 = 12
MR = 12 m
Bye :)
