exam Maths Puzzle Numerical Ability

In 2005, Dan raced his car 500 miles. His rate was 157.603 mph. What was his time (to the nearest thousandth of an hour)?

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exam Other Question

If Mr. Wee had 13 apples and 15 oranges. He pulls 2 without looking, what is the probability that they will both be apples? what is the answer to this problem using the cramer's rule?

x + 2y - z = -4
2x - 3y + 5z = 27
5x - y + 4z = 27