Yupz u b right cuz 8+9 is ur answer Don’t be so hard on yourself take it easy
So if x people were surveyed,

people owned a bike and

did not.
The difference between them is 72:

x-\frac{1}{8} [/tex] =72
so this means that

x=72
let's simplify:

x=72
and divide by 3:

x=24
and mupliply by 4:
x=96
so 96 people were surveyed
90 times bigger :) hope this helps !
14 days = 2 weeks
20weeks : 14 days = 20 weeks : 2 weeks = 20 weeks / 2 weeks = 10:1
hope it helps!