hard · GMAT Quant
Data Stream A transfers at 10 megabytes per second (MB/s). Data Stream B starts 20 seconds later and transfers at 25 MB/s in the same direction.
When Stream B has been active for 10 seconds, Stream A increases its rate to 30 MB/s. How many seconds after Stream A increases its rate will the two streams have transferred the same total amount of data?
- 10
- 5
- Never
- 15
- 20
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