Find the mean of given data:
23, 17, 32, 40, 15, 29

The mean is 26.

Step-by-step explanation:

Add up all of the numbers then divide by 6 (the amount of numbers).

156/6 = 26

b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.

30 people weigh 160 pounds or more