Mathematics, 22.05.2020 05:57 Caleb4904

Determine whether quantities vary directly or inversely and find the constant of variation.

A teacher grades 25 students essays in 4 hours. Assuming he grades at the same speed, how long will it take him to grade 35 essays? Plz before 6:00 I just need the constant variation

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Determine whether quantities vary directly or inversely and find the constant of variation.