Time - practice for 13 year olds - page 23 of 65
Number of problems found: 1284
- Revitalization 39191
Workers are building a new sidewalk while revitalizing the housing estate. Six workers will do the work in 12 days, but this is a problem because the sidewalk must be completed in 10 days to complete the work on time. How many workers must be hired to com - The caravans
At 6:00 in the morning, a caravan set out of the oasis at a speed of 1.5 miles per hour. Two hours later, a second caravan followed her at 2.5 miles per hour. When did the faster caravan run slower? How far from the oasis? - Two companies
Company A can fulfill the order in 12 days, and company B the same order in 18 days. How many days will the order be fulfilled if only company A works on it for the first two days, then the remaining days for both companies? - Headphones
Charlie is saving money to buy a pair of headphones for $225. He has $37 so far, and he can save $15 per week. In how many weeks will he have enough money to buy the headphones?
- Free fall
How long and at what speed does the body fall to the ground during a free fall from a height of 35 m? - Minutes 38331
Two planes took off from Prague at one point. The first is flying north at a speed of 420 km/h, and the second is flying east at a speed of 560 km/h. How far apart will they be as the crow flies in 25 minutes of flight? - Clock's 38311
How far apart are the tips of the clock's hands in 3 hours if the larger hand is 124 mm long and the smaller 75 mm? - Bricklayer 38291
A bricklayer will lay 12 m³ of brickwork in 4 days if he works 7 hours a day. How many days will he lay 51 m³ of masonry if he works 8.5 hours daily? - Rotary motion
Find the orbital time, rotational frequency, and angular rate of the second and minute hands on the watch.
- Two ports
Between the ports of Mumraj and Zmatek, two ships commute along the same route. They spend negligible time in ports, turn around immediately, and continue sailing. At the same time, a blue ship departs from the port of Mumraj, and a green ship departs fro - The mountain hut
The mountain hut has a supply of food for eight tourists for 15 days. Half more were come. How long will their food supply last if the daily ratio remains the same? - Constant 37773
Katka left the store with a heavy purchase at a constant speed of 0.5 m. S-1. Her brother Michal ran to help her at a constant speed of 3.25m. S-1. How many meters did Katka have to walk with her shopping before meeting Michal if the store is 300 m from t - Cyclist 37661
The cyclist will travel 22 km in an hour and a half. How long would it take to drive 30 km? - Constant 36941
The truck travels at a constant speed of 70 km/h. The first time it goes empty, and the second time it comes with a load. In which case is its kinetic energy smaller?
- Jaroslav 36791
Oldřich ran out of the house at 7.00 at 10 km/h. After 3 minutes, Jaroslav also ran at 12 km/h. A) what time did Jaroslav Oldřich finish? B) how many km did each run? - Athletic oval
On the 400 m athletic oval, two athletes started back to back from the same level. After the starting shot, they both ran away from each other simultaneously. Athlete A ran at 15 km/h, and Athlete B ran at 17 km/h. A) in how many seconds did the athletes - (deceleration) 36543
The car is traveling at a speed of 54 km. H-1. The driver starts braking with an acceleration (deceleration) of 3 m. S-2. Specify the time in which to stop. - Minutes 35311
Places A and B are 30 km apart. From A, Peter will ride a bike at a speed of 18km/h. Milan is also a bike from B but at a speed of 24km/h. How far apart will they be after 20 minutes? - A bus
A bus is scheduled to travel a distance of 121 km in 2 3/4 hours. What must the average rate of speed be maintained to arrive on schedule?
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