A certain device consumes 28 kW and delivers 14 kW. Find its efficiency.
Leave us a comment of example and its solution (i.e. if it is still somewhat unclear...):
Showing 0 comments:
Be the first to comment!
To solve this example are needed these knowledge from mathematics:
Next similar examples:
- Ratio v2
Decrease in the ratio 12:16 number 13.2.
Increase in the ratio 20:4 number 18.5.
- Arble bag
A marble bag sold by Rachel's Marble Company contains 5 orange marbles for every 6 green marbles. If a bag has 35 orange marbles, how many green marbles does it contain?
- Percentages and numbers
How many percent is number 426 greater than number 71?
148 is the total number of employees. The conference was attended by 22 employees. How much is it in percent?
- Percents - easy
How many percent is 432 out of 434?
In 7.C clss are 10 girls and 20 boys. Yesterday was missing 20% of girls and 50% boys. What percentage of students missing?
- New refrigerator
New refrigerator sells for 1024 USD, Monday will be 25% discount. How much USD will save, and what will be the price?
Iron ore contains 57% iron. How much ore is needed to produce 20 tons of iron?
Production of television sets increased from 3,500 units to 4,200 units. Calculate the percentage of production increase.
- Sales off
Goods is worth € 70 and the price of goods fell two weeks in a row by 10%. How many % decreased overall?
- The percentages in practice
If every tenth apple on the tree is rotten it can be expressed by percentages: 10% of the apples on the tree is rotten. Tell percent using the following information: a. in June rained 6 days b, increase worker pay 500 euros to 50 euros c, grabbed 21 fro
How many percents is 900 greater than the number 750?
- Apples 2
James has 13 apples. He has 30 percent more apples than Sam. How many apples has Sam?
- Seeds 2
How many seeds germinated from 1000 pcs, when 23% no emergence?
I have a box with two hundred pieces of gloves in total, split into ten parcels of twenty pieces, and I sell three parcels. What percent of the total amount I sold?
What number is 20 % smaller than the number 198?