Answer: For each of the questions, the numerator gives you the whole number (integer) and the denominator gives you the fraction that it is being multiplied by.
1. It should be 2 times 1/5. Because if you multiply those, you will get back to the fraction of 2/5.
2. It is 5 times 1/12
3. It is 7 times 1/2
20 Days. The least common factor of 4 and 10 is 20 so that is how many days it takes for him to clean both on the same day.
The answer would be x^12yz^4/64
% = (Change/Original) * 100
= (6/24) * 100
= (0.25) * 100
= 25%