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19 Jul 2018, 00:29
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Difficulty:
45%
(medium)
Question Stats:
56% (01:20) correct
44%
(01:21)
wrong
based on 230
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Three friends, A, B and C have houses along a straight road, in that order. If all three want to meet up at one of their houses, what is the minimum combined distance they need to travel?
(1) The distance between A’s house and B’s house is 2 miles.
(2) The distance between A’s house and C’s house is 8 miles
(1) The distance between A’s house and B’s house is 2 miles.
(2) The distance between A’s house and C’s house is 8 miles
GMATbuster92
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Updated on: 19 Jul 2018, 04:33
Originally posted by GMATbuster92 on 19 Jul 2018, 00:49.
Last edited by GMATbuster92 on 19 Jul 2018, 04:33, edited 3 times in total.
Last edited by GMATbuster92 on 19 Jul 2018, 04:33, edited 3 times in total.
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Lets move set by set
statement first , I only knew distance b/w a & b (not sufficient)
Statement 2 , I ony knew distance b/w a & c (still not sufficient)
now lets consider both statements :
a-->b = 2
a-->c = 8
Now if we know positions also we can analyse this
case 1 :
a-----b--------c
|--2--||---6---|
|------8--------|
now we can find minimum combined distance if they meet at b (that is logically be the place where everybody has to travel min distance): that is 8
Case 2:
b----- a---------c
|--2--| |----8---|
|------10--------|
now we can find minimum combined distance if they meet at a : that is 10
so we get 2 different answers , E is the answer.
NOTE : answer to this should be C , my bad i didn't read the "in order phrase".
statement first , I only knew distance b/w a & b (not sufficient)
Statement 2 , I ony knew distance b/w a & c (still not sufficient)
now lets consider both statements :
a-->b = 2
a-->c = 8
Now if we know positions also we can analyse this
case 1 :
a-----b--------c
|--2--||---6---|
|------8--------|
now we can find minimum combined distance if they meet at b (that is logically be the place where everybody has to travel min distance): that is 8
Case 2:
b----- a---------c
|--2--| |----8---|
|------10--------|
now we can find minimum combined distance if they meet at a : that is 10
so we get 2 different answers , E is the answer.
NOTE : answer to this should be C , my bad i didn't read the "in order phrase".
19 Jul 2018, 00:55
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kshitizbansal92
Hi kshitizbansal92
The question is about minimum distance so one ans 8 is possible..which you have calculated earlier
10 is not minimum so ans will be c.
