What is the lowest term of 24 min : 40 min

"Solution:

Find the GCF of 24 & 40

24 = 1,2,3,4,6,8,12,24

40 = 1,2,4,5,8,10,20,40

GCF = 8

24 ÷ 8 : 40 ÷ 8

Ratio is 3 min:5 min"