Register
Bryant just drank a cup of coffee to help him stay awake. The coffee had 52 milligrams of caffeine in it. If his body processes 20% of the caffeine every hour, how much will be left in 9 hours?
18.2k views
3 votes
Bryant just drank a cup of coffee to help him stay awake. The coffee had 52 milligrams of caffeine in it. If his body processes 20% of the caffeine every hour, how much will be left in 9 hours?

User Haobird
by
8.7k points

1 Answer

3 votes
Let c be caffeine, h be hours, mg milligrams:

c= 52 mg
1h =.2 (52)= 10.4

x/9h=10.4/1h

x= 93.6 mg

93.6- 52= 41.6 mg of caffeine will be left behind.











User Kusum
by
7.9k points
← Prev Question Next Question →

Related questions

Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.5m questions

12.2m answers

Other Questions

What is .725 as a fraction
How do you estimate of 4 5/8 X 1/3
i have a field 60m long and 110 wide going to be paved i ordered 660000000cm cubed of cement  how thick must the cement be to cover field
Write words to match the expression. 24- ( 6+3)
A dealer sells a certain type of chair and a table for $40. He also sells the same sort of table and a desk for $83 or a chair and a desk for $77. Find the price of a chair, table, and of a desk.
Link Copied!