rate and time

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Jinglander: Senior | Next Rank: 100 Posts; Posts: 58; Joined: Thu Jul 22, 2010 5:40 pm; Thanked: 1 times

by Jinglander » Wed Aug 11, 2010 7:59 pm

Is the number of seconds required to travel d1 feet at r1 feet per second greater than the number of seconds required to travel d2 feel at r2 feet per second.

1 d1 is 30 greater than d2
2 r1 is 30 greater than r2

ouch this one hurt

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Source: Beat The GMAT — Data Sufficiency | Wed Aug 11, 2010 7:59 pm

selango: Legendary Member; Posts: 1460; Joined: Tue Dec 29, 2009 1:28 amFollowed by: 7 members; Thanked: 135 times

by selango » Wed Aug 11, 2010 8:54 pm

d1/r1>d2/r2?

stmt1,

d1=d2+30

No info about r1 and r2.

Insuff

stmt2,

r1=r2+30

No info about r1 and r2.

Insuff

combining 1 and 2,

d2+30/r2+30>d2/r2?

d2=120,r2=20

3<6

t1<t2

d2=100,t2=100

1=1

t1=t2

Insuff

Pick E

--Anand--

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