At the city museum, child admission is $5.30 and adult admission is $9.40 . on tuesday, 140 tickets were sold for a total sales of $1086.40 . how many child tickets were sold that day?

Suppose that prices of a gallon of milk at various stores in one town have a mean of $3.71 with a standard deviation of $0.10. using chebyshev's theorem, what is the minimum percentage of stores that sell a gallon of milk for between $3.41 and $4.01? round your answer to one decimal place.