Question

If an associate’s average sale to 5 customers is $125, and her sales to four of the customers are $200, $150, $125, and $75, what is the associate’s sale to the fifth customer?

Answer 1

summation of sales to those five customers=5*125=625
the sale to the fifth customer=625-200-150-125-75=75

Answer 2

let x be the sale to the fifth customer
\[\frac{200+150+125+75+x}{5}=125\]
\[\frac{550+x}{5}=125\]
550+x=625
x=625-550
x=75

Answer 3

Thanks