Percentages practice problems - page 47 of 111
Number of problems found: 2219
- Sphere cube filling
Nine identical spheres are stacked in the cube to fill the cube's volume as much as possible. What part of the volume will the cube fill? - Cake portion comparison
Three children got part of the cake. Which got the most? Tomas 24% Lenka 0.3 Philip 2/7 - Iglu - cone tent
The cone-shaped tent is 3 m high, and the diameter of its base is 3.2 m. a) The tent is made of two layers of material. How many m² of fabric is needed for production (including flooring) if 20% needs to be added to the minimum amount due to cutting waste - Workshop production
Five hundred ninety pieces of clothing were to be sewn in the two branches of the tailor's workshop. However, 30% more were sewn in the first workshop and 10% more in the second. They sewed a total of 703 pieces. How many products were initially supposed - Company interest
At the beginning of the year, the company had CZK 5,000,000 in its account. He has the money saved at a 16% interest rate. How much was the interest for the first year? How much was the interest for the second year? - To the cinema 2
A cinema ticket costs 150 CZK for children and 200 CZK for adults. 100 tickets were sold for the film screening and the cashier collected 16,000 CZK. Calculate: a. How many children's tickets were sold? b. How much CZK was collected for the adult ticket? - Urea fertilizer
Urea contains 45% nitrogen. How much fertilizer will be needed per 1 hectare if you supply 30 kg of pure nitrogen? - Seasonal sale
The bike became cheaper on the seasonal sale by 22%, which is 88 euros. At what price is it sold now? - Mass layoffs
The company's new management has announced that mass layoffs will be necessary due to the poor financial situation. It is estimated that the work that 5 employees did will have to be done by 3 employees. What percentage of the company's employees would lo - Clothes
CZK 2,400 cost clothes: a sweater 150% more than a T-shirt, trousers 2x more than a sweater, and a jacket as a sweater and trousers. What did the individual clothes cost? - 15% of
15% of the revenue from sales was CZK 24,000, and it had to be written off as sales tax. What was the net profit on sales? - SMS customer
In January, mobile phone owners sent 1,500,000 SMS, which accounted for 75% of all January SMS. How many SMS did customers send in January? - Festival film
On TV, the festival broadcast 5 Belgian films and 3 Dutch films; the remaining 33.3% were from Luxembourg. Thus, the festival broadcast a total of 5 movies. - Three groups The company's employees are divided into three groups. The average salary of the first group, which includes 12% of the company's total number of employees, is CZK 40,000; in the second group, CZK 35,000; and in the third group, CZK 25,000. The average sa
- Student work percentage
There are a total of 26 students in the class. During the evaluation of the control work, the teacher said: "4 pupils got the number one, and that is 16%. "Did all the students write the control work? - Two shops
In two different shops, the same skis had the same price. However, they first became more expensive by 20% and then cheaper by 5%. In the second, they were first cheaper by 5% and then more expensive by 30%, so after these adjustments in the second store, - Tulips
Of the 120 tulips in the garden, 45 are red, 66 are yellow, and the rest are brindle. What percentage of tulips in the garden are brindle? - A 36
A 36 g sample of the substance contains 91% water. After drying, the weight of the sample was reduced to 18 g. What percentage of water is now in the sample? - Transmitter rope
A television transmitter 108 m high is anchored at 2/3 of its height (from the ground) by three ropes of equal length. How many meters of rope are needed for anchoring if it is embedded at a distance of 54 m from the foot of the mast, and we count 10% of - Solution volume
Calculate the volume of 50% KI solution and the volume of 20% KI solution needed to prepare 180g of 30% KI solution. The solution densities are known: ρ50% = 1.54575 g / cm3, ρ20% = 1.16597 g / cm³.
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