8v + 8b = 240
4v + b = 54
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Modify:
8v + 8b = 240
8v + 2b = 108
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Subtract and solve for "b":
6b = 132
b = 22 (# of students in each bus)
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Solve for "v":
4v + b = 54
4v + 22 = 54
4v = 32
v = 8 (# of students in each van)
20 I think. If I’m wrong don’t roast me please.
Answer:
0.77,0.60
Step-by-step explanation:
Given that in a population of 1000 subjects, 770 possess a certain characteristic.
A sample of 40 subjects selected from this population has 24 subjects who possess the same characteristic
To find out sample proportion:
Sample size n = 40
Favourable x = 24
Sample proportion p = 
To find out population proportion:
Total population N = 1000
Favourable X = 770
population proportion P = 
Answer:
615.4³
Step-by-step explanation: