Maths practice for 14 year olds - page 12 of 370
Number of problems found: 7398
- The tea
If the price of tea is increased by 20%, by how much percent must the consumption of tea be diminished so as not to increased the expenditure? - 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. - Two articles
A shopkeeper bought two articles each at Rs.800. There was 25% profit on one and 25% loss on the other. Find the total percentage profit or loss in the whole transaction. - The tent 3
The top of a 1.3 meters tall tent is tethered to the ground by a cable. The cable makes a 37 degrees angle with the ground. Find the cable length. - A swimming 2
A swimming pool had 2.5 million liters of water in it. Some water evaporated, and then the pool only had 2 million liters of water in it. What percent of the water evaporated? - A discount 2
A discount of 52.50 dollars is obtained if a discount of 15% is allowed. Find the marked price and the selling price. - A man 21
A man sells a bicycle at a profit of 25%. Had he bought it at a price less by 25% and sold it at 250 euro less then also he could have made a profit of 25%. Find cost price. - Mean proportional
If x+7 is the mean proportional between (x+3) and (x+12), find the value of x . - The HCF
The HCF of two numbers is 18 and their product is 12960. Their LCM will be - Billy 2
Billy has 3/4 of the money Derek has, and Derek has 7/9 of the Jason has. If they have a total of $680. How much does each person has? - Missing side length
Use the Pythagorean Theorem (a² + b²=c²) to find a unknown side length: a = 5; c = 13 ; b=? - Multiple and remainder
What is the least multiple of 7, which, when divided by each one of 6,9,15,18, gives the remainder of 4 in each case? - A boat 2
A boat can travel with a speed of 13 km/h in still water.If the speed speed of stream is 4 km/h, then find the time taken 1) to go 68 km downstream . 2) to go 63 km upstream . - A passenger
A passenger train, 150 m long, passes a railway platform, 200 m long, in 35 seconds. Find: 1) speed of the train in km/h 2) the time taken by the train to pass a man cycling in the direction of the train at the rate of 9 km/h. - The first
The first 300 km of a journey is covered in 10/3 hours, and the remaining journey is covered in 8/3 hours at 75 km/h. Find the average speed of the whole journey. - An election
In an election between two candidates, one candidate secured 43% of the total votes polled and lost the election by 4900 votes. Find the total number of votes polled. - Telephones
The cost of manufacturing x telephones by Josh Mobiles is given by C = 500 + 45x, and the revenue from selling these are given by R = 65x. How many telephones must be produced and sold in order to realize a profit? - The difference 8
The difference between the ages of two brothers is 10 years, and 15 years ago their ages were in the ratio 2:1.Find the ratio of their ages 15 years hence . - A man 20 A man sells an article at successive discounts of 10% and 5% on the listed price. Another man sells the same article at a discount of 15%.If the difference between the two selling prices be Rs 24, find the listed price of the article.
- Three pipes PPM
Pipe A can fill a tank in 20 h while pipe B can fill it in 10 h and pipe C can empty the full tank in 30 h. If all the pipes are opened together, how much time will be needed to make the tank full?
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