-0.333333333333 is the answer
Answer:
13
Step-by-step explanation:
If we want to find out if there are an equal amount of boys and girls, then we do 22/2 which is 11. BUT, it says there are two more girls than boys. So...
11+2 since there are two more boys than girls. 11+2=13 girls.
The general form of the formula x =1/3y can be obtained by multiplying the whole equation by 3 that is located in the denominator. In this case, the result is equal to 3x = y. Transposing y to the other side to join 3x, then the answer to this problem should be B. '
Answer:
A
Step-by-step explanation:
75% is 3/4. 20:4*3=15. Which means that he answered 15 questions. 15 out of 20.
Answer:
![A=300ml](https://tex.z-dn.net/?f=A%3D300ml)
Step-by-step explanation:
From the question we are told that
5% solution of dextrose sugar in water
20% solution of dextrose in
100 milliliters of distilled water water
Generally in mathematically solving we call A the amount of D20W added
Since 20% of dextrose is needed
![20 \%*100=20milliter](https://tex.z-dn.net/?f=20%20%5C%25%2A100%3D20milliter)
Total quantity after addition (100+x)
for DW5% total solution is
![5\% (100+A)= \frac{5}{100}(100+A)](https://tex.z-dn.net/?f=5%5C%25%20%28100%2BA%29%3D%20%5Cfrac%7B5%7D%7B100%7D%28100%2BA%29)
![5\% (100+A) =5+0.05A](https://tex.z-dn.net/?f=5%5C%25%20%28100%2BA%29%20%3D5%2B0.05A)
Mathematically
![5+0.05A =20](https://tex.z-dn.net/?f=5%2B0.05A%20%3D20)
![5+0.05A =20-5](https://tex.z-dn.net/?f=5%2B0.05A%20%3D20-5)
![A=\frac{15}{0.05}](https://tex.z-dn.net/?f=A%3D%5Cfrac%7B15%7D%7B0.05%7D)
![A=300ml](https://tex.z-dn.net/?f=A%3D300ml)
Therefore the required quantity ![A=300ml](https://tex.z-dn.net/?f=A%3D300ml)