Maths practice for 14 year olds - page 218 of 378
Number of problems found: 7560
- Stable people count
There are nurses and horses in the stable. George calculated that they have 11 heads and 36 all legs. How many people are in the stable? - Gold rods
In one kingdom, two gold rods were inherited over generations. But King Emanuel had three sons who could not agree on anything. He therefore wanted to break one rod so as to make three rods out of two. The youngest son gets the shortest rod, the oldest so - Age comparison puzzle
Five years ago, Adam was seven times more than Peter and ten years more than Peter. How old is Adam older than Peter? - Swimmer direction time
Two swimmers trained together in a small pool. Swimmer Pike will swim the pool in 16 seconds and swimmer Kaprik in 20 seconds. Both swimmers suddenly jumped into the pool from the same edge and, for 160 seconds, swam along the length of the pool back and - Three segments
The circle is divided into three segments. Segment A occupies 1/4 of the area. Segment B occupies 1/3 of the area. What part is occupied by section C? In what proportion are areas A: B: C? - Percentages
52 is what percent of 93? - Percentage of Percentage
What is 17% of 30% of 500? - Ladder wall height
To what height does a 6.5 m long ladder leaning against a wall at a distance of 5.4 m reach? - Bucket Water Weight Empty
A full bucket of water weighs 10kg. Half weighs 5.5 kg. How much does a bucket weigh? - Red and White Marbles
There are only red and white marbles in the bag, and precisely 18% of the marbles in the bag are red. After removing 25 white balls, exactly 20% of the balls in the bag will be red. How many balls are there? very much for your help - Ladder Shadow Length
Calculate the length of the shadow of a ladder 8 m long leaning against a 6 m high wall. (the sun shines perpendicular to the ladder - see picture). - Sales off
The price has decreased by 20%. How many percents do I have to raise the new price to be the same as before the cut? - Two Companies Working Together
Two construction companies are working on the landscaping. The first would do the whole job in 12 days, the second in 20 days. How long will they work together if the first start working when the second has already worked 4 days? - Regular triangular pyramid
Calculate the volume and surface area of the regular triangular pyramid. The height of the pyramid is 12 centimeters. The bottom edge is 4 centimeters, and the height of the sidewall is 12 centimeters. - Quadrangular pyramid
The regular quadrilateral pyramid has a base length of 6 cm and a side edge length of 9 centimeters. Calculate its volume and surface area. - Glider Motorplane Chase Time
The glider took off from the airport at 10:00 a.m. and flew to the designated destination 102 km away at a speed of 80 km/h. Half an hour later, a motorplane took off behind him at a speed of 180 km/h. When does the motor plane catch up with the glider, a - Climb of the road
At what angle does the road rise if the climb is 8%? They rounded up for tens of minutes. - Acid evaporation
How many kilograms of water do we have to evaporate from 100 kg of 32% acid to make it 80% concentration? - Father Sons Mowing Time
At six o'clock, the housekeeper will start mowing his lawn, which will take 12 hours. Two sons come to help him in an hour, and they will be together in 3 hours. How much would it take for just two sons to mow the lawn? - Card distribution ratio
The children have 568 cards distributed as follows: Jano and Mišo in the ratio of 3:7 and Mišo and Laco in the ratio of 3:5. How many cards does Mišo have?
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