Percentages practice problems - page 89 of 110
Number of problems found: 2199
- Church roof
The roof of the church tower has the shape of a regular tetrahedral pyramid with a base edge length of 5.4 meters and a height of 5 m. It was found that the 27% covering of the roof area needs to be corrected. What amount of material will be required? - Original reduce
If we reduce the unknown number by 469, we get 65% of the original number. What is the original number? - The tent
The tent shape of a regular quadrilateral pyramid has a base edge length of a = 2 m and a height of v = 1.8 m. If we have to add 7% of the seams, how many m² of cloth did we need to make the tent? How many m³ of air will be in the tent? - Sphere vs cube
How much % of the surface of a sphere of radius 12 cm is the surface of a cube inscribed in this sphere? - Summer camp
Out of the 180 students at a summer camp, 72 signed up for canoeing. Twenty-three students signed up for trekking, and 13 also signed up for canoeing. Use a two-way table to organize the information and answer the following question: Approximately what pe - Inscribed sphere
How much % of the volume of the cube whose edge is 6 meters long is the volume of a sphere inscribed in that cube? - Three dice
What is the probability that when we roll three dice, we roll the number 1,2,3? - Roof 8
How many liters of air is under the tower's roof, which has the shape of a regular six-sided pyramid with a 3,6-meter-long bottom edge and a 2,5-meter height? Calculate the supporting columns occupy about 7% of the volume under the roof. - Wednesday 3391
On Monday, three pupils were missing from the class, 12% of the total number of pupils. How many pupils were missing on Wednesday if 84% of all pupils were in school? - Hectoliters 3382
The block tank held 288 hectoliters of water. The bottom dimensions are 12m and 6m, and the depth is 2m. What percent of the tank volume does the water occupy? - Cylinder-shaped 3368
The cylinder-shaped silo (d = 2.8 m and v = 9 m) is 65% filled. How much silage can we store in it? - Football 3338
In two days, they sold 12,600 tickets for the football match. They sold 80% of what they did the next day on the first day. How many tickets were sold on the first day, and how many on the second day? - Water reservoir
The reservoir shape of a cylinder has a diameter of 8 m and a height of 2.8 m. The device indicates that the reservoir contains 800 hectoliters of water. Calculate how much % of the volume is used. - Alcohol mixture
We have to produce 0.2 kg of 60% alcohol from 55% and 80% alcohol. How many of them do we use in the solution? - Price increase
A 20 percent price increase meant a 90-crown raise. How much cost a product after? - Originally 3289
The pullover originally cost 45 euros. First, it fell by 20% and then by 10%. What is its current price? - Collecting
For the first week of material, collection events are picked up at the school 850 kg of paper and 305 kg of rags, representing 55% of the total collection for 14 days. How many kilograms of secondary raw materials were handed over in total? - Two-tenths 3275
The tourist ride lasted 6 hours. The tourists had three 15-minute and four 10-minute rest breaks during the tour. What % of the total walking time broke? Calculate two-tenths of a place - Information 3273
One serving of breakfast porridge weighs 175 g. According to its nutritional information, it contains 75 g of fiber. What percentage of fiber is in this porridge? - Three-stage 3272
In the three-stage races, which totaled 550 km, cyclists drove 38% in the first and 27% in the second stages. How many km will they cover in the third stage?
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