kcfgogbfalgfl
Auto-translated
- The fourth session begins, announced the host, and here is its first question: we have 50 units of underwear, 20 of them are red, and 30 are blue. What needs to be done to calculate the percentage of red underwear from the total number?
A: Divide the total number by two.
B: Subtract the number of blue underwear from the total number and multiply by two.
C: Divide the number of red underwear by the total number and multiply by one hundred.
D: Add the sum of red and blue underwear to the total number, divide by two, and subtract ten.
A: Divide the total number by two.
B: Subtract the number of blue underwear from the total number and multiply by two.
C: Divide the number of red underwear by the total number and multiply by one hundred.
D: Add the sum of red and blue underwear to the total number, divide by two, and subtract ten.