Rodney rides a motorcycle for of an hour over a distance of 30 km, stops to rest for of an hour, then continues for of an hour.
His average speed is km/h.
How far does he ride in the last quarter of an hour of his trip?
Rodney rides a motorcycle for \( \frac{1}{3} \) of an hour over a distance of 30 km, stops to rest for \( \frac{1}{6} \) of an hour, then continues for \( \frac{1}{4} \) of an hour.
His average speed is \( 66\frac{2}{3} \) km/h.
How far does he ride in the last quarter of an hour of his trip?
The owner of a pizzeria suspects that one of his delivery drivers has taken too long of a break.
He knows that the driver traveled for 45 minutes at a speed of 90 km/h and then quickly returned the same way at a speed of 67.5 km/h.
In the middle, he took a break. The manager also knows that the driver's average speed throughout the day is 54 km/h.
How long was the break?
Carmen climbs up a ladder for a minute and a half, stops for 15 seconds, then slides down a 3 meter-long slide in 20 seconds.
Her average speed from the bottom of the ladder to touching the ground is 0.036 meters per second.
How high is the ladder?
On the way home from school, Jerry stops at an ice cream shop.
It takes him 17 minutes to get to the shop, which is 1700 meters from his school.
It takes him a further 20 minutes to get from the shop to his house, which is 3000 meters away.
His average speed is 1.567 meters per second.
For how long did he stay at the ice cream shop?
The average speed of a boat is 45 km/h.
At the beginning of the voyage, the boat covers a distance of 30 km in 40 minutes.
What was the speed of the boat over the next 50 km?
Rodney rides a motorcycle for of an hour over a distance of 30 km, stops to rest for of an hour, then continues for of an hour.
His average speed is km/h.
How far does he ride in the last quarter of an hour of his trip?
km
The owner of a pizzeria suspects that one of his delivery drivers has taken too long of a break.
He knows that the driver traveled for 45 minutes at a speed of 90 km/h and then quickly returned the same way at a speed of 67.5 km/h.
In the middle, he took a break. The manager also knows that the driver's average speed throughout the day is 54 km/h.
How long was the break?
45 minutes
Carmen climbs up a ladder for a minute and a half, stops for 15 seconds, then slides down a 3 meter-long slide in 20 seconds.
Her average speed from the bottom of the ladder to touching the ground is 0.036 meters per second.
How high is the ladder?
meters
On the way home from school, Jerry stops at an ice cream shop.
It takes him 17 minutes to get to the shop, which is 1700 meters from his school.
It takes him a further 20 minutes to get from the shop to his house, which is 3000 meters away.
His average speed is 1.567 meters per second.
For how long did he stay at the ice cream shop?
minutes
The average speed of a boat is 45 km/h.
At the beginning of the voyage, the boat covers a distance of 30 km in 40 minutes.
What was the speed of the boat over the next 50 km?
km/h
A caterpillar crawls for two minutes at a speed of 3 cm per minute, then increases its speed and continues crawling.
In total, the caterpillar advances 30 cm and its average speed is 4.412 cm per minute.
How fast does it travel after increasing its speed?
Diego cycles around a bike path in two parts.
Part 1: 8.6 km in 28 minutes
Part 2: 11.4 km in 34 minutes
He rests between both parts.
If Diego travels at an average speed without stopping, he finishes in an hour and a quarter.
For how long does he rest?
Ricardo travels 18 km at a speed of X km/h and then doubles his speed.
Then he covers another 12 km, rests for half an hour, and then continues at his initial speed for another 10 km.
What is his average speed?
A caterpillar crawls for two minutes at a speed of 3 cm per minute, then increases its speed and continues crawling.
In total, the caterpillar advances 30 cm and its average speed is 4.412 cm per minute.
How fast does it travel after increasing its speed?
cm per minute
Diego cycles around a bike path in two parts.
Part 1: 8.6 km in 28 minutes
Part 2: 11.4 km in 34 minutes
He rests between both parts.
If Diego travels at an average speed without stopping, he finishes in an hour and a quarter.
For how long does he rest?
minutes
Ricardo travels 18 km at a speed of X km/h and then doubles his speed.
Then he covers another 12 km, rests for half an hour, and then continues at his initial speed for another 10 km.
What is his average speed?
km/h