The pieces are 2.5 and 7.5 the 7.5 is the piece that is 3 times the length of the first one
Then? You didn't type the full question
<span>Krystal's rate = 1 floor in 16 min. = 1/16 floors per min.
Working together their rate = 1 floor in 5.76 min. = 1/5.76 floors per min.
We need to determine Perry's rate, so we need to equate their combined rate with the sum of the individual rates.
Let Perry's time = x
In equation form, we can write:
1/16 + 1/x = 1/5.76
Solve for x:
(x+16)/16x = 1/5.76 -> 5.76(x+16) = 16x -> 10.24x = 92.16 -> x = 9
So, Perry would take 9 mins. to do the floor alone.
I hope this helped!
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The answer for # 1) B 1/3
is #2 not the same quesztion tho ?
Answer:
1/64
Step-by-step explanation:
