The proportion of employees who spend between $101 and $200 per month, inclusive, on commuting to work

Question:

The proportion of employees who spend between $101 and $200 per month, inclusive, on commuting to work is approximately 1/5. The proportion of employees who spend more than $200 per month on commuting to work is approximately 1/7. Find the proportion of employees who spend at least $101 per month on commuting to work. Write your result as a fraction.