# Energy saving

They were released three different, independent inventions saving 12%, 15% and 25% energy. Some considered that while the use of these inventions, the total savings will be 12% + 15% + 25% = 52%. Is this true? How much percent of energy will save all three inventions together?

**Result****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:

- New refrigerator

New refrigerator sells for 1024 USD, Monday will be 25% discount. How much USD will save, and what will be the price? - Gloves

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? - Seeds 2

How many seeds germinated from 1000 pcs, when 23% no emergence? - Iron

Iron ore contains 57% iron. How much ore is needed to produce 20 tons of iron? - Class

In 7.C clss are 10 girls and 20 boys. Yesterday was missing 20% of girls and 50% boys. What percentage of students missing? - Base, percents, value

Base is 344084 which is 100 %. How many percent is 384177? - Sales off

Goods is worth € 70 and the price of goods fell two weeks in a row by 10%. How many % decreased overall? - Pipe

Steel pipe has a length 2.5 meters. About how many decimetres is 1/3 less than 4/8 of this steel pipe? - Apples 2

James has 13 apples. He has 30 percent more apples than Sam. How many apples has Sam? - 100 %

How much is 100%, if 17 % is 1169? - Class

In a class are 32 pupils. Of these are 8 boys. What percentage of girls are in the class? - Number

What number is 20 % smaller than the number 198? - Percents - easy

How many percent is 432 out of 434? - Conference

148 is the total number of employees. The conference was attended by 22 employees. How much is it in percent? - 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 - TVs

Production of television sets increased from 3,500 units to 4,200 units. Calculate the percentage of production increase. - Human buying irrationality

I longer watch processors for Socket A on ebay, Athlon XP 1.86GHz with a PR rating of 2500+ costs $7 and Athlon XP 2.16Ghz with a PR rating of 3000+ currently cost $16. Calculate: About what percentage of the Athlon XP 2.16Ghz is powerful than Athlon X