exam Maths Puzzle Numerical Ability

Can you please help my son with this problem: 12 chirps/min

using the formula F= n/4 + 37

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exam Other Question

.666666666666666666666666666 A Student has scores of 73,79, and 81 on three government exams. What score does she need on a fourth exam to give her an average of 80 or better?