Genrald and Michelle went on a 24-mile bike ride. They rode 1/4 of the distance before stopping. By lunchtime, they rode 5/8 of the total distance. How many miles did they have left to ride after lunch?
(8/8 - 5/8) * 24 = _______ miles to ride after lunch
15 miles
To solve this problem, we need to add up the distances traveled before lunch and subtract it from the total distance.
First, let's find the distance they rode before lunch. We know that they rode 1/4 of the total distance, which is 24 miles. So to find the distance before lunch, we need to multiply the total distance by 1/4:
24 miles × 1/4 = 6 miles.
Therefore, they rode 6 miles before lunch.
Now, let's find the distance they rode by lunchtime. We know that they rode 5/8 of the total distance, which is also 24 miles. So to find the distance by lunchtime, we need to multiply the total distance by 5/8:
24 miles × 5/8 = 15 miles.
Therefore, they rode 15 miles by lunchtime.
To find the miles they had left to ride after lunch, we subtract the distance they rode by lunchtime from the total distance:
Total distance - Distance by lunchtime = Miles left to ride after lunch.
24 miles - 15 miles = 9 miles.
Therefore, they had 9 miles left to ride after lunch.