Which ratios form a proportion?

Please answer quick! I will give brainliest

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?

An investment decreases in value by 30% in the first year and decreases by 40% in the second year. what is the percent decrease in percentage in the investment after two years

Which inequality statement describes the two numbers on a number line? "? 7 and a number 5 units to the right of ? 7"