Maths practice for 14 year olds - page 73 of 378
Number of problems found: 7554
- Car uses
The car uses 91 liters of petrol to travel 700km. Determine the rate in liters per 100km. - 7 men
Seven men can complete work in 52 days. How many days will 13 men finish the same work? - Difference 78294
The distance between Aš and Břeclav is 477 km. At what speeds were the cars driving against each other when the slower one left Aš at 6:30 AM and the second left Břeclav at 8 AM? They meet at 10:30 AM, and the difference in their speeds is 41 km/h. How fa - Sipho
Sipho and John got the same amount of work; Sipho did 19/34 of his homework, and John did 23/41 of his homework. What percentage of his homework did John do, and what percentage of his homework did Sipho not do? - Kilograms - drying
Fresh herbs contain 90% water, dried 10% water. How many kilograms of herbs can we dry from 15 kg of fresh ones? - Making profit
If I make a profit of 25% on selling a bottle of drink for 85, how much did I buy the drink? - AMJ There are three siblings: Anne, Maya, and Jane. Anne gave Maya and Jane as much money as each had. Then Maya gave Anne and Jane as much money as each had. Then Jane gave Anne and Maya as much money as each had. Then, each of the three siblings had 128 pes
- AP five members
Give the arithmetic sequence of 5 terms if the first term is 8 and the last term is 100. Show your solution. - Mrs. Conley
Mrs. Conley asks her class what kind of party they want to have to celebrate their excellent behavior. Out of all the students in the class, 5 want an ice cream party, 7 want a movie party, 10 want a costume party, and the rest are undecided. If 20% of th - The rectangle 5
The rectangle OABC has one vertex at O, the center of a circle, and a second vertex, A, 2 cm from the edge of the circle, as shown. The vertex A is also 7 cm from C. The points B and C lie on the circumference of the circle. a. What is the radius? b. Find - Arithmetic mean - parabola
Find the value of k so that k² + 2k – 3 is the arithmetic mean between k² + 4k + 5 and k² – 6k + 10. - Žaneta 78044
Juraj and Žaneta are 48 years old. Juraj is twice as old as Žaneta. How old is Juraj, and how old is Žaneta? - Photographs 78034
The book was sold for 225 CZK and was sold out very quickly. The publishing house prepared a reprint and expanded the book with new photographs. The extended version of the book costs CZK 280. By what percentage is the new book more expensive? - Geometry: 78014
Good day, Even though it is a trivial task, I don’t know how to deal with it. This is analytic geometry: Find all integers a, b, and c such that the line given by the equation ax+by=c passes through the points [4,3] and [−2,1]. Thank you for your answer - A car 6 A car holds 15 liters of fuel. The car consumes 3 liters of fuel each 100 km. We started a trip of 350 km with a full tank of fuel. How much fuel remains in the tank at the end of the trip?
- Dishes
The HOD is to test at least three different dishes out of five before scoring the students. How many ways can he choose the dishes? - Five brown Five brown eye contracts, seven green pairs, and four blue pairs. What's the probability Gianna will randomly select a brown or green pair?
- Midpoint of line segment
Find the midpoint of the line segment joining the points (10,1) and (-8,-1). - The triangle 5 The triangle below has vertices A(-1,-2), B(2,2), and C(-1,4). What is the area of △ABCin square coordinate units?
- Cuboid's diagonal
The cuboid has a body diagonal u=25 cm, and side b is one-third longer than side a. What is the volume of the cuboid?
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