Ratio - math word problems - page 15 of 84
Number of problems found: 1670
- Pupils - class
There are 28 pupils in the class. The ratio of boys to girls is 3:5. Find the number of girls. - Map scale centimeters
Eight centimeters on the map represent two kilometers in reality. Determine the scale of this map. - Garden area ratio
The garden is drawn on a scale of 1:200. In what ratio are the real area of the garden and the area of its image? - Milan Emil shadow
Milo, who is 1.85 meters tall, casts a shadow of 74 cm. How tall must Emil be if he casts a shadow 6 cm longer than Milo simultaneously? - Rectangle perimeter area
The rectangle has a perimeter of 30 cm. The ratio of its sides a: b=2:3. Calculate the sides' lengths and the rectangle's area. - Class boy girl Express the ratio. There are 12 boys and 16 girls in the class. a) In what ratio is the number of girls to the number of boys? b) In what proportion is the number of boys to the total number of pupils?
- Lathe shaft production
The performance of three lathes can be expressed by the ratio 3:5:8. The most powerful lathe produces 136 shafts per shift. How many shafts did each of the remaining lathes make per shift? - Restaurant payment comparison
Four students were paying the bill in the restaurant. Jan paid 7 rums and 20 beers, Adam 20 rums and 7 beers, Víťa 12 rums and 25 beers, and Dan 25 rums and 12 beers. Jan paid 20% less than Adam. By how much % less did Víťa pay than Dan? - Gunpowder component mixture
Gunpowder is made from a mixture of coal, sulfur, and lignite, with 4 times more lignite than sulfur and 3 times more sulfur than coal. Calculate how many kilograms of individual components are needed to produce 240 kg of gunpowder.? - Three ratios
Calculate x in terms of: x:7=6:4 1/2:x=5:3/4 4:3=8:x - Hourglass
An hourglass consists of two identical containers in the shape of rotational cones. For simplicity, we assume that the cones touch only at their apexes. The sand reaches to half the height of the lower cone. After turning the hourglass over, it takes exac - Savings ratio three
The savings of Victor and Peter are in the ratio of 15:8, and the savings of Peter and George are in the ratio of 2:1. What is the ratio of the savings of Victor, Peter, and George? - Plate glass ratio
5 out of 32 plates and 2 out of 20 glasses were broken at the party. What is the ratio of plates to glasses now? - Selection 4
Select the triangle that is similar to the given triangle RTG. △RTG: r = 24 dm, t = 28 dm, g = 30 dm. △SHV: s = 6 dm, h = 7.5 dm, v = 7 dm △VSH: v = 7 dm, s = 6 dm, h = 7.5 dm △HVS: h = 7.5 dm, v = 7 dm, s = 6 dm △VHS: v = 7 dm, h = 7.5 dm, s = 6 dm △HSV: - Motor efficiency power
The electric motor has an efficiency of 80% (power and input ratio). What is the power input of this motor if its power is 5 horsepower (HP)? Enter the result in kilowatts (kW) and round to one decimal place (1 HP = 3/4 kW). - Triangle similarity selection
Choose a triangle that is similar to the given triangle. - ∆ TFC= t= 8 cm, f= 9 cm, c= 7 cm. : ∆ PKU= p= 45 cm, k= 35 cm, u= 40 cm. ∆ UPK= u= 40 cm, p= 45 cm, k= 35 cm. ∆ PUK= p= 45 cm, u= 40 cm, k= 35 cm. ∆ KPU= k= 35 cm, p= 45 cm, u= 40 cm. ∆ KUP= k= 35 - Triangle similarity decision Decide whether the triangles are similar. Choose between Yes/No. ∆ YUO: y= 9 m, u= 17 m, o= 12 m, ∆ ZXV= z= 207 dm, x= 341 dm, v= 394 dm
- Room plan area The area of the square-shaped room on the drawing with a scale of 1:150 is 6 cm². Determine the actual area of the room in square meters.
- In the dairy 2
In a dairy they have two lines for filling milk cartons. The more modern line is one and a half times faster than the old line. When both lines work simultaneously, they fill the usual daily amount of milk cartons 5 hours earlier than when only the old li - Calculation - mesh
Sketch the mesh of a cylinder whose base radius to height ratio is 2 : 3. Calculate the volume and surface of the cylinder if its height is 9 cm (sketch, calculation, answer).
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