BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem

How many red marbles?

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
User avatar
Legendary Member
Posts: 682
Joined: Fri Jan 16, 2009 2:40 am
Thanked: 32 times
Followed by:1 members

How many red marbles?

by Vemuri » Tue Mar 17, 2009 6:26 pm
If each marble in a set of 50 marbles is either red, black or white, how many are red?

1. 25 marbles are not black and 40 marbles are not white
2. There are 15 more black marbles than white marbles, and 5 more red marbles than white marbles.
Top
Source: — Data Sufficiency |
Legendary Member
Posts: 2467
Joined: Thu Aug 28, 2008 6:14 pm
Thanked: 331 times
Followed by:11 members

by cramya » Tue Mar 17, 2009 6:57 pm
I would go wiht D

Stmt II

x-> white marbles

x+x+15+x+5 = 50

Solve for x then for red

Stmt I

40 marbles are not white i.e they are red or black.

10 white

25 not black-> can be red or white

25 black

If 10 are are white out of 25 then 15 has to be red.

SUFF

D
Top
Post new topic Post Reply
• Page 1 of 1