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Julli [10]
3 years ago
9

At a gig 0.4 of the audience were female. If there were 100 more male audience members than female, how many were there in the a

udience?
Mathematics
1 answer:
pickupchik [31]3 years ago
3 0
Number of females = f
Total number of people in audience = n

0.4n = f
f + (f+ 100) = n
2f + 100 = n

Find n:
f = 0.4n --> Replace f with 0.4n in the equation 2f +100 = n

2(0.4n) + 100 = n --> Multiply out the brackets
0.8n + 100 = n --> Subtract 0.8n from both sides
100 = 0.2n --> To get n, multiply both sides by 5
n = 500

There were 500 people in the audience.
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If you have any questions I can try to help :)

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