Asked by Joshua
A block of ice loses one third of its weight every hour. After 2 hours, the block weighs 40 pounds. How much did the block weigh to begin with?
Answers
Answered by
Reiny
let it's original weight be x lbs
after 1 hour it weighed 2/3 x lbs
after 2 hours it weighed (2/3)(2/3)x lbs
4/9 x = 40
x = 40(9/4) = 90 lbs
after 1 hour it weighed 2/3 x lbs
after 2 hours it weighed (2/3)(2/3)x lbs
4/9 x = 40
x = 40(9/4) = 90 lbs
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.