August 2022 1 90 Report
Бассейн ёмкостью 240 м³ через первую трубу наполнится водой за 6 часов , а через вторую трубу - за 3 часа .За сколько часов бассейн наполнится водой ,если в бассейн вода будет поступать из обеих труб одновременно ?
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