gmat prep
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Whenever it's possible, please type out your questions instead of taking a screenshot.
Typed text allows for guests to see the question (they can't see attachments otherwise) and encourages them to participate as well. Also, attachments aren't searchable for future reference.
Thanks.
Typed text allows for guests to see the question (they can't see attachments otherwise) and encourages them to participate as well. Also, attachments aren't searchable for future reference.
Thanks.
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minimum pop for least populated would be 1 village with exacly 10% less than all the rest.
backsolve.
B) 10.800 + 10% = 11.880
11.880*10+10.800 = 118.800+10.800 = 129.600, not the same total, wrong
D)11.000 + 10% = 12.100
12.100*10+11.000 = 121.000+11.000 = 132.000, same as total, D is the answer
in backsolving there are many strategies, i always try (if the result sets are ordered, which they usually are) first B, if the result is larger than expected A is the answer (always confirm), if the result is less than expected try D, aplly the same reasoning untill you find the answer.
backsolve.
B) 10.800 + 10% = 11.880
11.880*10+10.800 = 118.800+10.800 = 129.600, not the same total, wrong
D)11.000 + 10% = 12.100
12.100*10+11.000 = 121.000+11.000 = 132.000, same as total, D is the answer
in backsolving there are many strategies, i always try (if the result sets are ordered, which they usually are) first B, if the result is larger than expected A is the answer (always confirm), if the result is less than expected try D, aplly the same reasoning untill you find the answer.