15/9 into simplest form will give brainlest

Acar started driving from city a to city b, distance between which is 620 miles, at a rate of 60 mph. two hours later a truck left city b and started moving towards city a at a rate of 40 mph. what distance from city a is the point where the truck and the car will meet?

I’m really confused and need your assist me with this question i’ve never been taught

You eat $0.85 for every cup of hot chocolate you sell. how many cups do you need to sell to earn $55.25