Answer:
4 weeks
Step-by-step explanation:
Well since he rides his bike 15 kilometers every two period, we can assume that he rides his bike 7.5 kilometers a day. So:
[tex]150=7.5x[/tex]
Where x is the number of days he rides his bike.
[tex]\frac{150}{7.5}=\frac{7.5x}{7.5}[/tex]
[tex]20=x[/tex]
So it will take him 20 days to ride his bike 150 kilometers.
Now all we have to do is divide the 20 days by 5 to show how many weeks it took:
[tex]\frac{20}{5}=4[/tex]
It took him 4 weeks.
