exam Maths Puzzle Numerical Ability

A 1990 census report revealed that the mean distance that U. S. citizens live from their birthplace is 50 miles and that the standard deviation is 15 miles. A random sample of 49

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Suppose you wanted to construct a fence around a garden plot in the form of a rectangle. On the neighbor�s side it�s going to need heavy-duty fencing that costs $2.00 per foot. The Please help me solve this equation. M-1/6=M/4+1

Multiply thru by 24. 24M-4 = 6M+24. Collect terms: 18M = 28. M = 14/9.