Asked by thomas

J.C. Nichols department store reports that the average sales on Saturdays is twice that on Thursdays and the average sales on Thursdays is twice that on the other four days.What fraction of the weekly sales are made on Thursdays?

a. 1/7
b. 1/5
c. 2/7
d. 1/3
e. 2/5

please answer and explain

Answers

Answered by Henry
Thu sales = $X
Sat sales = $2X
Other 4 days = $X/2

X/(x+2X+X/2) = X/(3 1/2)x = X/(7x/2) =
x * 2/7x = 2/7.


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