Themes, topics - math word problems - page 101 of 167
Number of problems found: 3330
- Minutes 8081
I will drain the whole tub in 4 minutes. How long would it take to drain it if I added two more drain holes?
- Distance 8080
The driver covered the distance between the two cities in 2 hours at an average 75 km/h speed. How did he change speed to get 20 minutes faster?
- Four workers
Four workers lay on the gym floor for six hours. After an hour of working together, one of the workers went to the doctor. How long will it take for the remaining three workers to complete their work?
- Twenty-four 8069
Twenty-four combers combed the hop garden in 6.5 days. How many combers would have to work on combing the hop garden in 5 days?
- Two cars on ring
Two cars were on the round track (ring) in the adjacent tracks, the first on the inner track and the second on the outer track. Both cars started at the same time from one starting track. The first toy car drove four laps simultaneously, and the second to
- Luggage and air travel
Two friends traveling by plane had a total of 35 kg of luggage. They paid one 72 CZK and the second 108 CZK for being overweight. If only one paid for all the bags, it would cost 300 CZK. What weight of baggage did each of them have? How many kilograms of
- Tributaries 8056
The pool is filled with three identical tributaries in 12 hours. In how many hours will only two tributaries fill it?
- People 8055
In 12 days, ten people will dig a 3km cable car. In how many days will five people dig it up?
- Eight hours
Brigadier Franta ties a sheaf of hay in 20 minutes. Lujza, at the same time, only a quarter. How many sheaves will they tie together in 8 hours?
- Lumberjacks
Fifteen lumberjacks would take 12 days to destroy the broken trees. How many days would this work require if the company added five workers to it after four days?
- Calories 2
Ben eats approximately 2400 calories per day. His wife Sarah eats 5/8 as much. How many calories does Sarah eat per day?
- Power input
The construction lift lifted a 300 kg load to a height of 12 m with uniform movement. If the efficiency is 75% and the engine has a power input of 5 kW, how long did it take for the load to be lifted?
- Ten cashiers
Ten cashiers are open at Tesco. Customers wait an average of 15 minutes. How many other cashiers have to open to reduce the waiting time by 4 minutes?
- Kilometers 8021
The pedestrian walks at a speed of 4.3 km/h. In 1 hour and 10 minutes, a cyclist followed him at an average 18 km/h speed. How many minutes will a cyclist reach a pedestrian, and how many kilometers will he travel?
- Exactly 8019
If there were 48 lines 10 cm long on each page, the book would have exactly 100 pages. How many 12cm long lines would be on each page for a book to have 80 pages?
- Self-counting machine
The self-counting machine works exactly like a calculator. The innkeeper wanted to add several three-digit natural numbers on his own. On the first attempt, he got the result in 2224. To check, he added these numbers again, and he got 2198. Therefore, he
- Relative 8009
Sketch the relative position of the circles k1 (S1, r1 = 5cm) and k2 (S2, r2 = 3cm) and k / S1S2 / = 0 cm and give its name.
- Inlet minus outlet
Water flows into the tank through two pipes and out of the third pipe spontaneously. Pipe A would fill the tank in 3 hours, pipe B would fill in 4 hours, and pipe C would flow out in 12 hours. If all three pipes open simultaneously, how long will the tank
- Equilibrium 7990
At the end of one arm of the equilibrium scales, which are in equilibrium, a lead body with a volume V1 is suspended in the air. At the end of the other arm is an aluminum body with a volume of V2. The balance arms have sizes l1 and l2, lead density h1 =
- Velocipedes
In the 19th century, bicycles had no chain drive, and the wheel axis connected the pedals directly. This wheel diameter gradually increased until the so-called high bikes (velocipedes) had a front-wheel diameter of up to 1.5 meters, while the rear wheel w
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