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If Lisa walks t blocks in 3 minutes, how many minutes will it take her
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03 Dec 2021, 06:32
03 Dec 2021, 06:32
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If Lisa walks t blocks in 3 minutes, how many minutes will it take her to walk s blocks at the same rate?
A. \(\frac{s}{3t}\)
B. \(\frac{3s}{t}\)
C. \(\frac{3}{st}\)
D. \(\frac{3t}{s}\)
E. \(\frac{t}{3s}\)
A. \(\frac{s}{3t}\)
B. \(\frac{3s}{t}\)
C. \(\frac{3}{st}\)
D. \(\frac{3t}{s}\)
E. \(\frac{t}{3s}\)
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Re: If Lisa walks t blocks in 3 minutes, how many minutes will it take her
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03 Dec 2021, 06:42
03 Dec 2021, 06:42
1
Carcass wrote:
If Lisa walks t blocks in 3 minutes, how many minutes will it take her to walk s blocks at the same rate?
A. \(\frac{s}{3t}\)
B. \(\frac{3s}{t}\)
C. \(\frac{3}{st}\)
D. \(\frac{3t}{s}\)
E. \(\frac{t}{3s}\)
A. \(\frac{s}{3t}\)
B. \(\frac{3s}{t}\)
C. \(\frac{3}{st}\)
D. \(\frac{3t}{s}\)
E. \(\frac{t}{3s}\)
Rate = distance/time
So, if Lisa walks a distance of t blocks in a time of 3 minutes, then her RATE \(= \frac{t}{3}\) (blocks per minute)
We now want to determine the time it will take Lisa to walk he distance of s blocks at a rate of \(\frac{t}{3}\) (blocks per minute
Time = distance/rate
So, Lisa's time \(= \frac{s}{\frac{t}{3}} =(s)(\frac{3}{t})=\frac{3s}{t}\)
Answer: B
gmatclubot
Re: If Lisa walks t blocks in 3 minutes, how many minutes will it take her [#permalink]
03 Dec 2021, 06:42
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