exam Maths Puzzle Numerical Ability

the school cafeteria surveyed the student body and discovered that 13/15 of the students listed pizza as their favorite lunch. There was a total of 78 students that liked pizza best. how many students were in the student body?

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exam Other Question

what is the square root of x^2-2x+1? Perimeter of a rectangle. The perimeter of a rectagular backyard is 6x + 6 yards. If the width is x yards, find a binomial that represents the length.