If x is an integer and 2.134 × 10^x is less than 210,000, what is the greatest possible value for x?

The average length of 6 snakes is 80 cm. If the average length of one third of the snakes is 70 cm, what is the average of the other snakes?

A wholesaler bought 1,200 radios for $18 each. The wholesaler sold 60 percent of the radios for $30 each and the rest for $15 each. What was the wholesaler’s average (arithmetic mean) profit per radio?

An investor purchased 20 shares of a certain stock at a price of $45.75 per share. Later this investor purchased 30 more shares at a price of $46.25 per share. What was the average (arithmetic mean) price per share that this investor paid for the 50 shares?

If the range of the set of numbers {150, 90, 125, 110, 170, 155, x, 100, 140} is 95, which of the following could be x?

If the average (arithmetic mean) of 13, 17, x, 12 and 16 is greater than 15, which of the following must be true?

I. x is the median of the numbers

II. x is equal to 15

III. x is greater than the average of the numbers

For the set {6, 15, y}, the standard deviation is x. What is the standard deviation of the set {10, 19, (y + 4)}?

If apples sell for $0.68 per pound and Juanita bought 36 apples for $8.16, then the average (arithmetic mean) number of apples per pound was

A charitable association sold an average of 66 raffle tickets per member. Among the female members, the average was 70 raffle tickets. The male to female ratio of the association is 1:2. What was the average number of tickets sold by the male members of the association

The average weight of a class of 34 students is 45 kg. If the weight of the teacher be included, the average rises by 400 g. What is the weight of the teacher ?