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In 1 hour, 8 teachers can mark 90 exam papers. How many exam papers can 15 teachers mark in 1 and a half hours?
Could someone please tell me if this is correct.
90 divide by 8 = 11.25 = 1 teacher per hr
15 x 11.25 = 168.75 = 15 teachers in an hour.
168.75 divide by 2 = 84.37 = 15 teachers in half an hr
168.75 + 84.37 = 253.12
Please help. I need a refresher course for sure.
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