exam Maths Puzzle Numerical Ability

3 to the (A) power = 800, what is (A)

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exam Other Question

A bus leaves a station at 1 P.M., traveling west at an average
rate of 44 mi/h. One hour later a second bus leaves the same station, traveling
east at a rate of 48 mi/h. At what time will the two buses be 274 mi apart?

Tom tried to compute the average of his 7 test scores. He mistakenly divided them by 6, which yeilds 84. What is the correct average test score?