Asked by sherry
Dale and Kim can assemble a swing set in 1 1/2 hours.Working alone it takes kim 4 hours longer than Dale to assemble the swing set .How long does it take Dale working alone to assemble the swing set?
Answers
Answered by
Steve
1/d + 1/(d+4) = 1/(3/2)
d+4 + d = 2/3 d(d+4)
6d + 12 = 2d^2 + 8d
2d^2 + 2d - 12 = 0
d^2 + d - 6 = 0
(d+3)(d-2) = 0
d = 2
1/2 + 1/6 = 1/(3/2)
works for me
d+4 + d = 2/3 d(d+4)
6d + 12 = 2d^2 + 8d
2d^2 + 2d - 12 = 0
d^2 + d - 6 = 0
(d+3)(d-2) = 0
d = 2
1/2 + 1/6 = 1/(3/2)
works for me
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.