Answer:
In each shelves there are 64/4 books I.e. 16.
Answer:
If,

But 3^x ≠ 21875,if x is a whole number.
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7/8 of that drink is water because 50 ml is 1/8 of 400 so the other 7/8 is water
Answer:
39
Step-by-step explanation:
Let x = number of child tickets sold.
Cost of x child tickets is x * 5.30 = 5.3x.
"three times as many adult tickets as child tickets were sold"
Number of adult tickets sold: 3x
Cost of 3x adult tickets is 3x * 8.40 = 25.2x
Cost of all tickets is 5.3x + 25.2x = 30.5x
Cost of all tickets is $1189.50
30.5x = 1189.5
x = 1189.5/30.5
x = 39
Answer: 39