Ali drinks three 12-ounce sodas every day and has done so for the past 2 years. His dentist warns him that acid and sugar from drinking that many sodas are damaging his teeth. Ali needs to reduce his intake to two 12-ounces sodas per week. By what percent does Ali need to reduce his soda intake for the week?
A. 90
B. 67
C. 45
D. 80

Question

Ali drinks three 12-ounce sodas every day and has done so for the past 2 years. His dentist warns him that acid and sugar from drinking that many sodas are damaging his teeth. Ali needs to reduce his intake to two 12-ounces sodas per week. By what percent does Ali need to reduce his soda intake for the week? 
A. 90 
B. 67 
C. 45 
D. 80

anonymous · Answer

I would say A.

anonymous · Answer

Thank you very much for the help. Now I just have to figure out how you came up with the answer because I have to show my work.

anonymous · Answer

I did process of elimination so b and c are out. And since he's only drinking a 12 once soda a week it had to be 90 or a.

anonymous · Answer

Okay, thank you. That makes more sense to me now.

anonymous · Answer

Anytime! ☺

a1234 · Answer

3 sodas every day means 21 sodas a week. His intake needs to be reduced to 2 a week.

2/21 = x/100
x is approximately 9.5.

100 - 9.5 = 90.5, A

anonymous · Answer

Thank you very much!