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Amanda [17]
3 years ago
7

Mr. Brown can grade 4 exams in 15 minutes. How many exams can he grade in 1 hour? How do you know?

Mathematics
2 answers:
Savatey [412]3 years ago
4 0
16 because you divide i hour by 15 and multiply that by 4:)
mel-nik [20]3 years ago
4 0
4:15
1:.15
X:1H
16:1H

This is because 15x4=1hour and 4x4=16
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