Ratio - practice for 13 year olds - page 12 of 40
Number of problems found: 799
- Rectangle 62854
The aspect ratio of the rectangle and its diagonal is 9:12:15. Calculate the area of the rectangle if the length of the diagonal is 105 cm. - Castle Museum
Many medieval cannons made of cannon were found in the Castle Museum (cannon is an alloy of tin and copper in a ratio of 1:9). The councilors agreed that they did not need cannons, but a new bell would be thrown at the town tower. The bells are made of be - Library
They packed books in the library. They used 45 cm of wrapping paper per book. Wrapping papers are sold in rolls of 3 meters. How many such roles do they need to wrap 20 books? - Exchange office
We get € 1.2 for one pound in the exchange office. For 1 € we get 4 Polish zlotys. Michael found 300 zlotys at home and wanted to turn them into pounds. How many pounds will he get for them?
- Superstar 62054
Jana, Petra, and Andrea sent an SMS to Superstar. The number of messages they sent was in the ratio 4:3:2, with Andrea sending 35 fewer text messages than Jan and Peter combined. How many text messages did all 3 girls send together? - Rocks
Dana loves rocks! She has six pieces of granite, three pieces of marble, 14 pieces of sandstone, and one piece of slate. What is the ratio of sandstone pieces to marble in Dana's collection? - Manganese
Manganese bronze contains the following metals per pound: copper 0.89 lb, tin 0.10 lb, and manganese 0.01 lb. How much copper is in a shaft that weighs 235 pounds? - Multiple ratio
The numbers of boy students, girl students, teachers, and other staff of the school are in the ratio of 14:12:2:1. How many teachers are there at school if there are 216 girl students at school? - Dimensions 60923
The drawing of the apartment is in the ratio of 1:200. The living room has dimensions of 2cm x 3cm in the picture. How many square meters does the living room have?
- Following 60793
I want to turn to help with the following example. How do I reach an 8% solution? I need to mix 3.5% milk with 33% cream. Thank you for being so helpful. - Angles
In the triangle ABC, the magnitudes of the angles α, β γ are in the ratio 0.4:1:0.9. Find their magnitudes. - Corresponding 60311
The drink was mixed from one hundred percent juice and water in a ratio of 1.5 liters of juice to 2.5 liters of water. Calculate how many liters of this drink will be created by mixing 1 liter of water and juice in the corresponding ratio. Calculate how m - Bronze
Bronze has 80% copper and 20% tin. How much copper will we need to produce bronze if we have 39kg of tin? - Hat and scarf
Katy knitted a scarf four times faster than a hat. Knitting together lasted 15 days. How much did she knit a hat?
- The ratio 7
The ratio of the sides of two squares is 4:5 if the sum of their areas is 180 cm². Find the sides of the two squares. - Jointly function
If z varies jointly as x and y, and z = 12 and x = 2 and y = 4, find z when x = 5 and y = 2 - The ratio 6
The ratio of cats to dogs is 2 to 5. if there are 35 total animals in the shelter, then how many are dogs? - Fruits 6
Ten mangoes, six guavas, and eight chicos are in a basket. What part of the total number of fruits are guavas? - A sum 2
A sum of money is divided between Laura and Joan in the ratio of 2:3. Laura gets 8 pesos. How much did Joan get?
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