The mean of n numbers is the sum of these numbers divided by n.
The mean of the data set is 20.
The mean of the data set is 20.
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Answer:
14
Step-by-step explanation:
you can write an equation to represent the situation:
let x represent the number of lawns he has to mow
then, the monthly profit would be 25x - 100.
in order to make $250, this equation has to be equal to 250:
now, solve this:
add 100 to both sides
divide both sides by 25
he must mow 14 lawns