Question

A train travels at an average of 50 miles per hour for 2& 1/2 hours and theen travels at a speed of 70 miles per hour for 1 & 1/2 hour.How far did the train travel in the entire 4 hours?

Answer 1

key point - "distance = speed × time"

distance covered in initial two and a half hour = 50 × 5/2 = 25×5 = 125 miles

distance travelled in next one and a half hour = 70 × 3/2 = 105 miles

so total distance travelled in entire 4 hours = 125 + 105 = 230miles.