The scores for a basketball team are 72, 84, 102, 73, 90 and 83. the scores for the next two matches bring the average up to 90. what was the total score of these two games?

i'm having trouble finding how to go about this.

72 + 84 + 102 + 73 + 90 + x
OVER
9
EQUALS 90

You just have to figure out what 90•8 is and subtract the sum of the numbers you were given because you will now have eight numbers instead of six and that is your total sum because whatever the sum is divided by the number of terms (8) has to equal 90

21/2 hours=150 minutes150 minutes x 80 beats per minute= 12,000 beats in 2 1/2 hours