Tiffany answered 32 questions correctly since 32/40 is .80
Answer:
He cannot drink and drive, we cannot use this in maths as drinking has adverse effects on any person at any time no matter how many units you drink. The answer is zero.
Step-by-step explanation:
Expansion to adverse effects is factual to what achohol and drugs do to your mind even though people keep pace under any small intake of say drink the facts are that drink reduces reaction times and has a chemical effect with choline in the brain.
The answer is 30. you can find the unit rate but the calculator was invented a long time ago so i used that ;)
For 12, you would do 90=4x+42, and 48=4x, and x=12
for 15, you would do 90=8x+66, and 24=8x, and x=3
for 18, you would do 90=3x+57, and 33=3x, and x=11
