exam Maths Puzzle Numerical Ability

If you are 2 miles away fm the lighting flash, how long will it take the sound of thunder to reach you?

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exam Other Question

The lenght of 1 side of a retangle is 34cm.The area of a rectangle is 68cm times 68cm. What is the width of the retangle. how do you solve a problem like, Y=3X-2 when -1<=X<=3,?