Solve 700-Level Algebra Qs In 90 Secs!
Master 700-level Inequalities and Absolute Value Questions

Attend this free GMAT Algebra Webinar and learn how to master the most challenging Inequalities and Absolute Value problems with ease.

FREE GMAT ALGEBRA WEBINAR
Live: 4th June 2023, 7am-9am PST
Presented by e-GMAT

## A bag contains x blue chips and y red chips. If the probability of selecting a red chip at random is 3/7, then x/y =

##### This topic has expert replies
Legendary Member
Posts: 1223
Joined: Sat Feb 15, 2020 2:23 pm
Followed by:1 members

### A bag contains x blue chips and y red chips. If the probability of selecting a red chip at random is 3/7, then x/y =

by BTGModeratorVI » Wed Jul 29, 2020 2:42 pm

00:00

A

B

C

D

E

## Global Stats

A bag contains x blue chips and y red chips. If the probability of selecting a red chip at random is 3/7, then x/y =

A. 7/11
B. 3/4
C. 7/4
D. 4/3
E. 11/7

Source: Magoosh

Junior | Next Rank: 30 Posts
Posts: 13
Joined: Tue Jul 28, 2020 9:01 pm

### Re: A bag contains x blue chips and y red chips. If the probability of selecting a red chip at random is 3/7, then x/y =

by terminator12 » Wed Jul 29, 2020 8:30 pm
Probability of selecting red chip = $$\frac{y}{x+\ y}$$ = $$\frac{3}{7}$$

Solving this, we get $$\frac{x}{y}$$ = $$\frac{4}{3}$$

### GMAT/MBA Expert

GMAT Instructor
Posts: 16201
Joined: Mon Dec 08, 2008 6:26 pm
Location: Vancouver, BC
Thanked: 5254 times
Followed by:1268 members
GMAT Score:770

### Re: A bag contains x blue chips and y red chips. If the probability of selecting a red chip at random is 3/7, then x/y =

by [email protected] » Thu Jul 30, 2020 7:28 am
BTGModeratorVI wrote:
Wed Jul 29, 2020 2:42 pm
A bag contains x blue chips and y red chips. If the probability of selecting a red chip at random is 3/7, then x/y =

A. 7/11
B. 3/4
C. 7/4
D. 4/3
E. 11/7

Source: Magoosh
We can quickly solve this question by testing values that satisfy the given information

GIVEN: The probability of selecting a red chip at random is 3/7
So, it COULD be the case that there are 3 red chips, and a TOTAL of 7 chips
If there are 7 chips and 3 are red, then the other 4 chips must be blue
In other words, y = 3 and x = 4

This means x/y = 4/3