# The mid-value of a class interval is 42. If the class size is 10, then the upper and lower limits of the class are:A. 47 and 37B. 37 and 47C. 37.5 and 47.5D. 47.5 and 37.5

Let the upper limit and lower limit of the class be x, y

Then = 42

Or x + y = 84

x - y = 10

Solving equations x = 47, y = 37

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