In June, a runner ran a mile in 7:45. In September, the runner ran a mile in 5:51. Is the percent of change in time

If 20% of a number is 35, what is 50% of that number?

27 is what percent of 108? 27 is % of 108

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. how many hours after the truck's departure will the two meet?