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What you need to do is to first write the ratio of number of miles the car can travel to the number of gallons of gas the car has. The ratio is 400/8 and in simplest form it is 50/1 after dividing both numerator and denominator by 8. Example #6: Suppose a math class starts at the beginning of the school year with 12 boys and 8 girls.
Now, to bring the bleach percentage back to 20%, extra water is added and the amount of bleach remains the same. 16 L of bleach constitutes 20% of the solution → 16/(32 y) = 20/100 → y = 48.
Therefore, 48 litres of water has to be added to the solution if bleach has to be 20% of the whole solution.
A ratio is a mathematical term that is used to compare the size of one number to the size of another number.
It is commonly used in both mathematics and in professional environments.
Is the ratio of boys to total number of students in the class still the same?
For instance, the ratio of number of boys in a class to the number of girls is 2:3.
Then, (4 x)/(20 x) = 50/100 → x = 12 L of bleach is added. 105 per kg,then what fraction of the total mixture are walnuts? This means that adding 3 kgs of cashews and 1 kg of walnuts gives a mixture that can be sold at Rs. So, 3 kgs of cashews present for every 1 kg of walnuts.
Now, there is 4 12 = 16 L of bleach in 16 L of water in a total of 32 L of solution. Solution: For this type of problems, first step is to determine how much each of the items is above or below the target.
In order for this 7.2 ml to constitute 8% of the solution, we need to add extra water. Question: There is a 20 litres of a solution which has 20% of bleach.
Extra bleach is added to it to make it to 50% bleach solution. So, for each kg of cashews added, let’s consider it as ‘-5’ and for each kg of walnuts added, let’s consider it as ‘ 15’.