Direct relationship - examples
- Sea water
One tonne of sea water contains 25 kg of salt. How many tonnes of sea water need to be evaporated to obtain 1 tonne of salt?
For 7 hours study, she scored a 75 so if she made 93 how many hours would she need to study?
- Photo egative
Negative dimensions are 36mm and 28mm. What will be the photo size in the 21:4 ratio?
- Photo enlarge
Mark wants to enlarge a 4-inch by 6-inch photo so that it has a height of 15inches. Use a ratio table to determine the new width of the photo.
- Sides od triangle
Sides of the triangle ABC has length 4 cm, 5 cm and 7 cm. Construct triangle A'B'C' that are similar to triangle ABC which has a circumference of 12 cm.
- Angles ratio
The internal angles of a triangle are in ratio 1:4:5 What kind of triangle is it?
- Tree shadow
The shadow of the tree is 16 meters long. Shadow of two meters high tourist sign beside standing is 3.2 meters long. What height has tree (in meters)?
- Sun rays
If the sun's rays are at an angle 60° then famous Great Pyramid of Egypt (which is now high 137.3 meters) has 79.3 m long shadow. Calculate current height of neighboring chefren pyramid whose shadow is measured at the same time 78.8 m and the current hei
Charlie bought 7 same chocolates for 14 Eur. How many euros he pay for 27 chocolates?
4 chickens give 4 eggs in 4 days. How many eggs can give 8 chickens for 8 days?
In human body the blood is about 7.7% body weight. How many kilograms of blood is in the human body with weight 96 kg?
Same type of medicament produces a number of manufacturers in a variety of packages with different content of active substance. Pack 1: includes 60 pills of 1200 mg of active substance per pack cost 18 Eur. Pack 2: includes 30 pills of 1000 mg of active s
Two workers would make installation of greenhouses for 54 hours. For how many hours does the installation 9 workers?
193 cow consumes 13510 kg hay per day. How many kg of hay consume one cow in one day?
After three 10° beers consumed in a short time there are 7.4 g of alcohol in 5 kg adult human blood. How much is it per mille?
6 numbers are in the ratio 3:3:4:4:5:5. Their sum is 264. What are the numbers?
Kevin save € 4620 to buy a car. Yet it lacks save 65% of the car price. How much is the car?
- Road repair
Road repair took 16 days for 34 workers if they worked 6 hours a day. How many days take repair same road 33 workers if they work 6 per day?
- Linear independence
Determine if vectors u=(3; -3) and v=(0; 3) are linear Linear dependent.
Gross wage was 1113 USD including 16% bonus. How many USD were bonuses?