exam Maths Puzzle Numerical Ability

WHAT IS THE INTERIOR ANGLE MEASURE DEGREE IN A 11-GON

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exam Other Question

IF POINTS A,B,AND C LIE ON A CORDINATE LINE AND POINTS A AND B HAVE COORDINATES 15 AND 7 RESPECTIVELY, THEN WHICH OF THE POSSIBLE COORDINATES FOR POINTS C SATISFY(IES) d(A,C) not sure if in right category
but when the question is like jill does this in 30 min
bob does it in 45
sue takes an hour and a half
how long does it take all of them to do it together
i have no idea how to solve this problem