Question

simplest form 3m:90 cm

Answer 1

converting 3m=300 cm
now solving
=300:90
=300/90
=10/3
=10:3

Answer 2

heye my dear friend here is your answer

3m:90cm. (3m=300 cm)
300cm:90cm
30cm:9cm
10cm:3cm
10/3=cm
3.333333333334................. go to infinity
it's your answer