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Source: — Data Sufficiency |
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by earth@work » Wed Dec 03, 2008 4:17 pm
Let t be the time taken byPablo & s be pablo's speed, we get s*t distance by Pablo
(1) gives us the distance by Al= (t+1)*(s-5), we hv no info abt Marsha - INSUFF
(2) gives distance by Marsha = 50*9 miles, alone is INSUFF
(1) & (2) together give us equation, s*t + (t+1)*(s-5) + 50*9 = 1500
this again is INSUFF as we have 2 variables s&t and only 1 equation.
Answer E
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