Question

The distance between Alphaville and Betaville is seven hundred and

twenty-five miles. A car from Alphaville to Betaville is moving at a speed
of sixty-two miles per hour. Another car from Betaville to Alphaville is
moving at a speed of fifty-seven miles per hour. How far apart are the
cars after two and a half hours? Draw the situation. Solution: a specific
decimal number greater than 400 and less than 500.*

Answer 1

Explanation:

Distance = speed × time

A car from Alphaville to Betaville is moving at a speed of sixty-two miles per hour. This means that after two and a half hours, the distance that this car would have covered is

62 × 2.5 = 155 miles

Another car from Betaville to Alphaville is moving at a speed of fifty-seven miles per hour. This means that after two and a half hours, the distance that this car would have covered is

57 × 2.5 = 142.5 miles

A and B represents Alphaville and Betaville as well as the first and second cars. The total distance covered by both cars is

155 + 142.5 = 297.5 miles

The distance between both cars after two and a half hours is

725 - 297.5 = 427.5 miles