GMAT
题目
One computer can upload 100 megabytes worth of data in 6 seconds. Two computers, including this one, working together, can upload 1300 megabytes worth of data in 42 seconds. How long would it take for the second computer, working on its own, to upload 100 megabytes of data?
解析
第一台电脑6秒可以上传100兆字节的数据，因此在\( 6×7=42 \)秒内，它可以上传\( 7×100=700 \)兆字节的数据。
所以第二台电脑在42秒内上传了\( 1300-700=600 \)兆字节的数据。
由此可知，第二台电脑在\( 42÷7=7 \)秒内可以上传\( 600÷6=100 \)兆字节的数据。
答案：B
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