Source:New SAT Study GuideSAT Study Guide Explanations, Test 2; Test 2, Section 4; #34

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如果道格比劳拉在实验室花了40小时did, how many hours did Laura spend in the lab?

In one semester, Doug and Laura spend a combined 250 hours in the tutoring lab. If Doug spent 40 more hours in the lab than Laura did, how many hours did Laura spend in the lab?

1 Explanation

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GravatarChris Lele, Magoosh Tutor

Apr 20, 2016 •Comment

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