The first step to solve this problem is to figure out how many countries per day ms. Sims travels. Do this by dividing 42 by 60. If the division sign is a “per” symbol she would travel 42 every 60 days.
42/60 is 0.7
So she travels 0.7 countries per day.
Multiplied by 40 days (40 times 0.7) is 28. 28 countries per 40 days
