Algebra - math word problems - page 25 of 304
Number of problems found: 6074
- Usual speed 2
A passenger train takes 1 h less for a journey of 120 km.If its speed increased by 10 k/h from its usual speed. What is its usual speed? - A long train A train passes a standing man in 6 sec and 210 m long platform in 16 s . Find the length and the speed of the train.
- Move the average
If the average of 5 numbers is 20, the number which should be added to first number to make the average becomes 30? - Family members
Three years ago, the average age of a family of five members was 27. The present average age is also 27 after a child is included in the family. Find the age of the child. - Usual speed
If the usual speed is reduced by 5 km per hour, a train takes 2 hours more to cover a distance of 300 km. Find the usual speed. - A boat 3
A boat takes 1 hour longer to go 36 km up a river than to return. If the river flows at 3 km/h, find the rate at which the boat travels in still water. - A data A data set has the sample mean =14 and the sum of the data values=294. How many values are there in the data set?
- Five men
5 men or 9 women can do a piece of work in 19 days, in how many days will 3 men and 6 women do it? - Fraction of a work
Person A can do 1/2 of a piece of work in 8 days, while person B can do 1/3 of the same work in 8 days. In how many days can both do it together? - 3 men
Three men painting a house take 7 1/2 days. How long will 5 men take over the same job? Working at the same rate. - Three numbers
In three numbers, the first number is double the second number, and the second number is double the third. The average of the numbers is 21. Find the least number. - Coefficient of skewness
For the data set whose Karl Pearson's Coefficient of skewness = -2.25, variance is 16, and Mean is 35, then its median value will be: - Three Numbers GP
The sum of three Numbers in geometric progression (GP) is 38, and their product is 1728. Find the Numbers. - Average and mean
Suppose that the average of the four values, {-1, x, -2x, 3}, is equal to x - 1. Find the value of x. - Divisors 7
If 540=2²×3³×5, what is the number of all factors of 540? - Kenji
Kenji earned the test scores below in English class. {79, 91, 93, 85, 86, and 88} After his next test, his mean and median scores both changed to 88. What does he earn on his test? - Miss Patel
Miss Patel thinks her class of 20 students will average 95 on a math test. Before she grades the last student's test, the class average is 97. What is the lowest possible score on the 20th test for the class to average 95? - Library and gym
In a town, 7/8 of the population has a library card, and 3/4 has a gym membership. What fraction of the population has either a library card or a gym membership? - One kilometer race
In a 1 km race, student A beats student B by 48 meters or 12 seconds. Find the time taken by student A in this race. - Workers If x men can complete a work in 8 days and x+4 men can complete the same work in 6 days. Find the value of x.
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