steve traveled the first 2 hours of his journey at 60 mph and the remaining 3 hours of his journey at 80 mph . what is his average speed for the entire journey ?
"distance traveled in 2 hours = 2 * 60 = 120 m distance traveled in 3 hours = 3 * 80 = 240 m total distance covered = 240 + 120 = 360 m total time = 2 + 3 = 5 h hence avg speed = total distance covered / total time taken = 360 / 5 = 72 mph answer : b"
add(divide(add(multiply(80, 3), multiply(60, 2)), add(3, 2)), subtract(divide(const_100, 3), const_0_33))