# Ski class

Class attend 30 boys and some number of girls. Ski training was attended by 28 boys and all the girls, which was 95% of all students. How many girls attend this class? How many percent is that?

Result

x =  10
p =  25 %

#### Solution:

28 + x = 95/100*(30+x)

5x = 50

x = 10

Calculated by our simple equation calculator.

Leave us a comment of example and its solution (i.e. if it is still somewhat unclear...):

Be the first to comment!

#### To solve this example are needed these knowledge from mathematics:

Our percentage calculator will help you quickly calculate various typical tasks with percentages. Do you have a linear equation or system of equations and looking for its solution? Or do you have quadratic equation?

## Next similar examples:

1. Unknown number
Identify unknown number which 1/5 is 40 greater than one tenth of that number.
2. Equation
Solve the equation: 1/2-2/8 = 1/10; Write the result as a decimal number.
3. Percentage reduction
Reducing the unknown number by 19% get number 700.7 Determine unknown number.
4. Perctentages
35% of what number is 35?
5. Walnuts
x walnuts were in the mission. Dano took 1/4 of nuts Michael took 1/8 from the rest and John took 34 nuts. It stayed here 29 nuts. Determine the original number of nuts.
6. Number
What number is 20 % smaller than the number 198?
7. Assistant
Assistant rewrote 15% of the entire manuscript in 12 hours. How many hours must still write to rewrite the rest of the manuscript?
8. Iron
Iron ore contains 57% iron. How much ore is needed to produce 20 tons of iron?
9. Goods
To the market is introducing a new product, the first week is sold at a reduced price. 8 products is sell at an entry price same as 5 products at the normal price. How much % is reduced price less than the current price for this product?
10. Candy
Peter had a sachet of candy. He wanted to share with his friends. If he gave them 30 candies, he would have 62 candies. If he gave them 40 candies, he would miss 8 candies. How many friends did Peter have?
11. Cancer
Of the 80 people 50 people ill cancer. What percentage of people isn't ill?
12. Mushrooms
For five days, we have collected 410 mushrooms. Interestingly every day we have collected 10 mushrooms more than the preceding day. How many mushrooms we have collected during 4th day?
13. Seeds 2
How many seeds germinated from 1000 pcs, when 23% no emergence?
14. The ball
The ball was discounted by 10 percent and then again by 30 percent. How many percent of the original price is now?
15. Shots
Determine the percentage rate of keeper interventions if from 32 shots doesn't caught four shots.
16. Factory
In the factory workers work in three shifts. In the first inning operates half of all employees in the second inning and a third in the third inning 200 employees. How many employees work at the factory?
17. Percentages
52 is what percent of 93?