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# Car X and Car Y were members of a cross-country race. If Car X and Car

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Math Expert
Joined: 02 Sep 2009
Posts: 50730
Car X and Car Y were members of a cross-country race. If Car X and Car  [#permalink]

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13 Jul 2018, 03:40
00:00

Difficulty:

55% (hard)

Question Stats:

45% (01:11) correct 55% (01:07) wrong based on 46 sessions

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Car X and Car Y were members of a cross-country race. If Car X and Car Y drove a total of 300 miles, how many miles did Car X drive?

(1) Car Y drove 3/4 as many miles as Car X did.

(2) Car X drove 11 percent of all miles driven in the race.

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Joined: 31 Oct 2013
Posts: 797
Concentration: Accounting, Finance
GPA: 3.68
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Car X and Car Y were members of a cross-country race. If Car X and Car  [#permalink]

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Updated on: 13 Jul 2018, 04:21
Bunuel wrote:
Car X and Car Y were members of a cross-country race. If Car X and Car Y drove a total of 300 miles, how many miles did Car X drive?

(1) Car Y drove 3/4 as many miles as Car X did.

(2) Car X drove 11 percent of all miles driven in the race.

Total no. of miles drove by x and y = 300.

Question : How many miles car x drove ?

Statement 1:

Let care x drive x miles .

So y drive 3y/4 miles.

We can form an equation . Sufficient.

Statement 2:

Straight . 11% is given . it's the no. of miles driven by x. but we don't know the total no of miles in the race. Insufficient.

Originally posted by selim on 13 Jul 2018, 04:12.
Last edited by selim on 13 Jul 2018, 04:21, edited 1 time in total.
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Joined: 13 Feb 2018
Posts: 135
Car X and Car Y were members of a cross-country race. If Car X and Car  [#permalink]

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13 Jul 2018, 04:16
1
selim wrote:
Bunuel wrote:
Car X and Car Y were members of a cross-country race. If Car X and Car Y drove a total of 300 miles, how many miles did Car X drive?

(1) Car Y drove 3/4 as many miles as Car X did.

(2) Car X drove 11 percent of all miles driven in the race.

Total no. of miles drove by x and y = 300.

Question : How many miles car x drove ?

Statement 1:

Let care x drive x miles .

So y drive 3y/4 miles.

We can form an equation . Sufficient.

Statement 2:

Straight . 11% is given . it's the no. of miles driven by x. So, rest of the miles driven by x. Sufficient.

11% is given the all miles driven. Do we know that only x and y cars were in the race? Probably no. So we have no idea how much miles were driven by all participants, have we?
Director
Joined: 31 Oct 2013
Posts: 797
Concentration: Accounting, Finance
GPA: 3.68
WE: Analyst (Accounting)
Car X and Car Y were members of a cross-country race. If Car X and Car  [#permalink]

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13 Jul 2018, 04:19
LevanKhukhunashvili wrote:
selim wrote:
Bunuel wrote:
Car X and Car Y were members of a cross-country race. If Car X and Car Y drove a total of 300 miles, how many miles did Car X drive?

(1) Car Y drove 3/4 as many miles as Car X did.

(2) Car X drove 11 percent of all miles driven in the race.

Total no. of miles drove by x and y = 300.

Question : How many miles car x drove ?

Statement 1:

Let care x drive x miles .

So y drive 3y/4 miles.

We can form an equation . Sufficient.

Statement 2:

Straight . 11% is given . it's the no. of miles driven by x. So, rest of the miles driven by x. Sufficient.

11% is given the all miles driven. Do we know that only x and y cars were in the race? Probably no. So we have no idea how much miles were driven by all participants, have we?

Thanks. understand how i made the mistake. total mile of the race is not's given. we don't know.
Car X and Car Y were members of a cross-country race. If Car X and Car &nbs [#permalink] 13 Jul 2018, 04:19
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