Question

Очень хитрый киоскер получил для прождажи несколько пачек конвертов по 100 конвертор в каждой.10 конвертов он отсчитывает за 10 сек.за сколько секунд он может посчитать 60 конвертов,а 90?

Answer 1

60 конвертов за 60 секунд, 90 конвертов за 90 секунд или 1,3 мин

Answer 2

I can help you translate from Russian to English using the web search results. Here is the translation of your text:

Answer in detail. A very cunning kiosk owner received several packs of envelopes for sale, 100 converters in each. He counts 10 envelopes for 10 seconds. How many seconds can he count 60 envelopes and 90?

The translation is based on the results from [Google Translate](https://translate.google.ru/?hl=en), [Yandex Translate](https://translate.yandex.com/en/translator/Russian-English), and [DeepL Translate](https://www.deepl.com/translator-mobile/l/en/ru). You can also use these websites to translate other texts from Russian to English or vice versa. I hope this helps.