exam Maths Puzzle Numerical Ability

If 65% of the general popultion has an IQ between 85 and 115, in a school system of 3500 students, how many students would you expect to han an IQ in this range?

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exam Other Question

In a town election, the winning candidate had 220 more votes than the loser. If 810 votes were cast in all, how many votes did each candidate recieve? find the inverse of the function f(x)= 3x^2+12x+6