Neil had some olive oil. He used 1/5 liter to make a salad dressing. There was 1/2 liter of olive oil remaining in the bottle. What amount of olive oil did Neil have in the bottle before using some for the salad dressing and the steps to calculate it?
a. no real solution
b. one real solution
c. two rational solutions
d. two irrational solutions
Please help me :)
For this case we have:
1st step:
We look for 30% of 400 by a rule of three of the form:
400 -------> 100%
x -----------> 30%
Where x is given by the number that represents 30% of 400.
We have:
2nd step:
We search for 20% of the number found, that is, , using a rule of three:
120 -------> 100%
y -----------> 20%
Where y is given by the number that represents 20% of 120.
We have:
So, the number that Anthony found is 24.
3rd step:
According to the statement, we must find the% that represents the number of Anthony, based on the number 45. Through a rule of three we have:
45 -------> 100%
24 -----------> z%
Where z is given by the% that represents Anthony's number, knowing that 45 represents 100%.
We have:
%
Answer:
The number of Anthony represents 53.33% of 45.