algebra
posted by cearia .
a theater has 850 seats,60% of which are in the orchestra. how many seats are not orchestra?

algebra 
~christina~
850 x .60 = 510
take that number 510 and then
subtract from the original 850 and you will get your answer
850510= ______? 
algebra 
~christina~
Note that if you want to find the percentage of a number you have to take the percentage and then divide by 100 then mutiply that by the number you want the percent of.
example:
70% of 200
70% => .70
.70 x 200= 140
and to find the number not included here in the 70% then just subtract the number found from the original number
given, thus:
200 140= 60 
algebra 
ven
Thanks, that was helpful.
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