Answer: $11.45
Step-by-step explanation:
Food pill: $9
Tax: 6%
Tip: 20%
\\x=11.45](https://tex.z-dn.net/?f=x%3D%289%29%2B%289%29%280.06%29%2B%5B%289%29%2B%289%29%280.06%29%5D%280.20%29%5C%5Cx%3D11.45)
Trick question: Jessica still only drank 3.5 glasses of water it doesn’t matter what her sister did it does not effect what Jessica drank.
We know that the 15% of missing pencils is equal to 9
we can use this formula
9/x = 15/100
Then cross multiply
15x = 900
x = 60
There were orignally 60 pencils
It is 0.5 because 1/2 x 1 is 0.5