Target Test Prep's 2024 GMAT Focus Edition prep is discounted for the BTG community!

Redeem

Search found 19 matches

Go to advanced search

OG 13 #180 explanation

Data Sufficiency

thanks Brent,

the second approach makes more sense to me. appreciate your quick response

by jeph86

Wed Feb 17, 2016 4:54 pm
Forum: Data Sufficiency
Topic: OG 13 #180 explanation
Replies: 3
Views: 1282

OG 13 #180 explanation

Data Sufficiency
OG 13 #180 explanation

if m^-1=-1/3, then m^-2 is equal to?

a) -9
B) -3
C) -1/9
D) 1/9
D) 9

I don't understand how the answer is D. my choice was E. Can someone explain this answer?

thanks

by jeph86

Wed Feb 17, 2016 4:21 pm
Forum: Data Sufficiency
Topic: OG 13 #180 explanation
Replies: 3
Views: 1282

Teacher to Student ratio

Data Sufficiency

Hi Rich,

so in order for the information to be sufficient combine, district M and P should have the same ratio which be choice C instead of E?

by jeph86

Fri Sep 18, 2015 11:41 am
Forum: Data Sufficiency
Topic: Teacher to Student ratio
Replies: 7
Views: 2776

Teacher to Student ratio

Data Sufficiency

because the prompt says that the ration for each district are equal, does that mean the ration student to student should be 1:1.

DS is still confusing me!!

by jeph86

Fri Sep 18, 2015 9:09 am
Forum: Data Sufficiency
Topic: Teacher to Student ratio
Replies: 7
Views: 2776