Maths practice for 14 year olds - page 114 of 361

Number of problems found: 7214

The temperature 18
The temperature at 12:00 PM was 43 °F. Over the day, the temperature decreased by 3.5 °F per hour. What was the new temperature at 6:00 PM?
Discount
If someone gives you a discount on "X" at 5% for 60 days. Then the discounted amount is 80000. find the actual amount? Discounted Amount=80000 rate=5% Period=60 days Actual amount=?
The sales 2
The sales tax in your city is 8.8 percent, and an item costs 55 USD before tax. How much tax would you pay on that item?
Full tank
Jacob pumps a full tank into his motorcycle and leaves. On the way to the city, it consumes 11/16 tanks and back 3/5 of the rest. What percentage of the fuel will remain in the tank?
Manganin
How long must a manganin wire with a diameter of 0.8 mm have a value of 10 Ω?
24carat gold
The goldsmith cast 22-carat gold and 14-carat gold and earned 20 dkg of 18-carat gold. How much gold did he use?
Two angles 2
Two angles of a triangle have the same measure, and the third is 45 degrees greater than each of the other two. Find the measure of the largest angle.
Sides in ratio
The sides of the triangle are in a ratio of 2:6:5. Find the dimensions of the remaining sides if the longest side is 32 cm.
Trapezoid and diagonals
Find the area of a trapezoid with bases a = 24 cm, c = 16 cm, and diagonals u = 22 cm, v = 26 cm.
Seaside route length
The trip to the seaside vacation was as follows: 80% of the entire route was on the plain. 40% of the rest was through the mountains. The remaining 180 km was along the coast. What is the total length of the route? Thank you
School student
The probability that a school student has a skateboard is 0.34, the probability that he has a bicycle is 0.81, and the probability that he has a skateboard and a bicycle is 0.22. What is the probability that a randomly selected student has a skateboard or
Similarity of triangles
If triangle ABC ~ to triangle XYZ, AC = 24, AB = 15, BC = 17, and XY = 9, what is the perimeter of triangle XYZ? Round all sides to 1 decimal place.
Gale and spruce
A mighty gale broke the top of the fifteen-year spruce, resting it on the ground. The distance of this top from the trunk was 4.6 m below. At what height was the spruce trunk broken?
Train
Find the average speed of a train (in km/h) that passes a telegraph pole in 7 seconds and passes a 378 m platform in 25 seconds. How long is the train?
The block
The block has dimensions of 5 cm, 10 cm, and 15 cm. Calculate the size of the wall diagonals of this block.
Goods price reduction
They reduced the goods by 15% from the original price of CZK 3,400. What is the new price?
Regular octagon pad
You need to make a pad in the shape of a regular octagon with a side length of 4 cm. What is the minimum diameter of the circle-shaped semi-finished product from which we make the pad, and what will be the percentage of waste? (Round the results to 1 deci
What is
What is the circumference of an isosceles trapezoid with an area of 106.75 cm²? The lengths of the sides are in the ratio of 1:3:2:1, and the bases are 6.1 cm apart.
Production plan
The annual production plan was exceeded by 2%. If production were higher by 300 products, the plan would be exceeded by 5%. What was the annual production plan?
The train
The train starts for 2 min with an acceleration of 25 cm/s². What speed will he gain in this time, and what path will he pass?

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