Question 180444
(21+22+19+8+x)/5=18
:
remember the avg is found by adding the terms together and then dividing by the number of terms. x is one of those values that has to be added to the rest to find the average which in our case we know to be 18
:
70+x=90......added terms and multiplied both sides by 5
:
{{{highlight(x=20)}}}....subtracted 70 from both sides