Step 1
Find out how many chairs are already taken. Multiply the tables by the chairs

Step 2
By using proportion find the percentage

therefore
the answer is
%
Percent means per 100.
Per means divided by.
So you can change a number by multiplying it by 1. Anything over itself is 1 (except zero but that doesn't matter right now)
So multiply .6 by 100/100
So you get 60/100
or 60 per 100
or 60%.
So basically, just multiply by 100 and add the % sign!
Answer:
$12
Step-by-step explanation:
Since she has $16 left, this means she spent $84. ($100-$16=$84)
Then, since she bought the same give for 7 of her friends, divide:
84/7=12.
This means that each gift cost $12.
Answer:
trapezoid
Step-by-step explanation: