Question

В первый день Катя выучила 60% всех словарных слов, а во второй-20 оставшихся слов. Сколько всего слов она выучила

Answer 1

X * 0.4 = 20 
x = 20 / 0.4 
x = 50 слов

Answer 2

Катя за два дня выучила 50 словарных слов

Answer 3

Calculating the Total Number of Words Katya Learned

To calculate the total number of words Katya learned, we can use the information provided in the question.

- On the first day, Katya learned 60% of all the vocabulary words. - On the second day, she learned 20% of the remaining words.

Let's calculate the total number of words she learned.

Step 1: Calculate the percentage of words learned on the second day. - Since she learned 60% on the first day, 40% of the words remained. - On the second day, she learned 20% of the remaining 40%, which is 8% of the total words.

Step 2: Add the percentages of words learned on both days. - She learned 60% on the first day and 8% on the second day, totaling 68% of the words.

Therefore, Katya learned 68% of all the vocabulary words.

Conclusion

Katya learned 68% of all the vocabulary words.