Có hai công nhân cùng làm việc mỗi ngày 8 giờ để sản xuất một sản phẩm. Thời gian làm xong một sản phẩm của họ tương ứng là 2 phút và 6 phút. Dùng công thức trung bình điều hòa. Hãy tính thời gian trung bình để sản xuất 1 sản phẩm của 2 công nhân đó

The number of hours per week that the television is turned on is determined for each family in a sample. the mean of the data is 37 hours and the median is 33.2 hours. twenty-four of the families in the sample turned on the television for 22 hours or less for the week. the 13th percentile of the data is 22 hours. approximately how many families are in the sample? round your answer to the nearest integer.

Lucy is a dress maker. she sews \dfrac47 7 4 of a dress in \dfrac34 4 3 hour. lucy sews at a constant rate. at this rate, how many dresses does lucy sew in one hour? include fractions of dresses if applicable

Agarden consists of an apple tree, a pear tree, cauliflowers, and heads of cabbage. there are 40 vegetables in the garden. 24 of them are cauliflowers. what is the ratio of the number of cauliflowers to the number of heads of cabbage?