One weighs a pound and the other pounds away!
Answer: C,D
Step-by-step explanation:
There are 3 types of cost for this problem: the cost for the area covered by the tiles, cost for hourly labor and the sales tax.
Cost of Area = (10.5 ft)(8 ft)($4.75) = $399
Cost of Hourly Labor = ($22/h)(7.5 h) = $165
Sum = $399 + $165 = $564
Cost of tax = $564(0.08) = $45.12
Total Cost = $564 + $45.12 = <em>$609.12</em>
So, the amount of the bill is incorrect.
To find 50% or half, of 31, you can just add 31 + 31.
Or, 31 x 2.
Or even the longer way, we know 3 + 3 = 6. So we can just add 0's: 30 + 30 = 60. That leaves us with the 1's. 1 + 1 = 2.
Take our 60 from earlier, and add 2. 60 + 2 = 62.
Check your answer. 62/2 = 31.
Your answer is 62
