Answer: 6 3/4
Explanation:
1. Use proportion:
8:4.5=24:x
8x=24*4.5
x=3*4.5
x=13.5
2. Use proportion
8:4.5=4:x
x8=18
x=18/8
x=9/4
x=2.25
3. For 24 people you need 13,5
for 12 people you need :
24:13.5=12:x
x=13.5/2
x=6.75
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