Switzerland - summerjob

Zuzka and Hanka used to work in a cherry orchard to earn money for a sightseeing trip to Switzerland. They brushed 15 trees every day and harvested the entire orchard in 10 days. How long would it take them to harvest the entire orchard if they brushed 20 trees daily?

Final Answer:

t =  7.5 d

Step-by-step explanation:

t=2015 10=7.5 d



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