Reason - math word problems - page 50 of 109

Number of problems found: 2168

Red cubes
There are 15 white and several red cubes in the box. The probability of accidentally pulling out a white cube is 20%. How many red cubes are in the box?
Two pipes
How long will the pool be filled with a double supply pipe if it takes the pool to fill the first pipe by 4 hours long and the second pipe 9 hours longer than both pipes open simultaneously?
There
There are two numbers on the screen - one in the blue and the other in the red box. In the beginning, both numbers are the same. With each beep, both numbers increase - by 1 in the blue field and by 3 in the red field. At one point, the number 49 appears
Two-digit number puzzle
The digit sum of a two-digit number is 11. After changing the order of the digits, I get a number 27, smaller than the intended number. What number do I think?
Two cities
The car goes from city A to city B at an average speed of 70 km/h and back at an average speed of 50 km/h. If it goes to B and back at an average speed of 60 km/h, the whole ride will take 8 minutes less. What is the distance between cities A and B?
Cyclist Round Trip Distance
At eight in the morning, a cyclist went from city K to city L. He stayed in city L for 4.25 hours and returned home at 3:00 p.m. Calculate the distance between cities K and L if the cyclist traveled to city L at a speed of 12 km/h and from city L to city
Three Consecutive Integers Sum
The sum of three consecutive integers equals three times the middle number. Specify these numbers.
Circus
At the circus performance, there were 150 people. Men were ten less than women and children 50 more than adults. How many children were in the circus?
Math test
Obelix filled out a mathematical test in which he answered 25 questions. For every correct answer, he received 5 points. For each wrong answer, he had 3 points deducted. Obelix gained 36% of all points in the test. How many questions did he solve correctl
Non-skiers
All fifth-graders went together on a ski course. There were more than 30 but fewer than 40 of them. First they were divided into skiers and non-skiers. Half of all the girls ended up in the non-skiers group, along with the same number of boys. In the skie
The Hotel
The Holiday Hotel has the same number of rooms on each floor. Rooms are numbered with natural numerals sequentially from the first floor; no number is omitted, and each room has a different number. Three tourists arrived at the hotel. The first one was in
Six-digit primes
Find all six-digit prime numbers that contain each one of digits 1,2,4,5,7, and 8 just once. How many are there?
Paper money distribution
The four friends received money for collecting paper as follows: Mirko received a quarter of the entire amount, Robo received a third of the remaining money, and Boris received half of the second remaining money. Peter had 1.50 euros left. How many crowns
She encoded
Aunt Heda likes puzzles, but her memory is no longer working for her. She chose the 4-digit code on her mobile phone as follows: She encoded her name according to the order of the letters in the alphabet (A=1 B2 C3 D4 E5 F6 G7 H8 I9 ) inserted one multipl
On a farm
A farm has 900 rabbits, 700 sheep, 300 cattle, and 500 pigs. What percentage of the total number of animals are rabbits?
Wage variance deviation
A statistician monitored the variance of monthly wages and found its value to be 640,000. Determine the standard deviation of salaries if there is a one-off increase: a) about CZK 1,800, b) about 5%.
Test Score Unanswered Questions
The test has 50 questions. Four points are counted for each correct answer, 3 points are deducted for an incorrect answer, and 2 points are deducted for an unanswered question. Peter scored 108 points on the test but answered only 6 questions. How many qu
Two trains
Through the bridge, long l = 240m, the train passes through the constant speed at time t1 = 21s. A train running along the traffic lights at the edge of the bridge passes the same speed at t2 = 9s. a) What speed v did the train go? b) How long did a train
Marriage sttus
In our city, 3/5 of the women are married to 2/3 of the men. Find what part of the population is free.
Mushrooms
Fresh mushrooms contain 88% water and dried 14% water. How many kilograms of fresh mushrooms should be collected to get 3 kg of dried?

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