The Binary Ice Cream Shoppe sells two flavors, vanilla and chocolate. On friday, the ratio of vanilla cones sold to

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BTGmoderatorDC: Moderator; Posts: 7187; Joined: Thu Sep 07, 2017 4:43 pmFollowed by: 23 members

by BTGmoderatorDC » Mon Nov 16, 2020 5:55 pm

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The Binary Ice Cream Shoppe sells two flavors, vanilla and chocolate. On friday, the ratio of vanilla cones sold to chocolate cones sold was 2 to 3. If the store had sold 4 more vanilla cones, the ratio of vanilla cones sold to chocolate cones sold would have been 3 to 4. How many vanilla cones did the store sell on Friday?

A) 32
B) 35
C) 42
D) 48
E) 54

OA A

Source: Princeton Review

Source: Beat The GMAT — Problem Solving | Mon Nov 16, 2020 5:55 pm

swerve: Legendary Member; Posts: 2604; Joined: Sun Oct 29, 2017 2:04 pmFollowed by: 6 members

Re: The Binary Ice Cream Shoppe sells two flavors, vanilla and chocolate. On friday, the ratio of vanilla cones sold to

by swerve » Tue Nov 17, 2020 11:00 am

BTGmoderatorDC wrote: ↑
Mon Nov 16, 2020 5:55 pm
The Binary Ice Cream Shoppe sells two flavors, vanilla and chocolate. On friday, the ratio of vanilla cones sold to chocolate cones sold was 2 to 3. If the store had sold 4 more vanilla cones, the ratio of vanilla cones sold to chocolate cones sold would have been 3 to 4. How many vanilla cones did the store sell on Friday?

A) 32
B) 35
C) 42
D) 48
E) 54

OA A

Source: Princeton Review

Given, $\dfrac{v}{c} = \dfrac{2}{3} \Longrightarrow c= \dfrac{3v}{2}$

and $v+\dfrac{4}{c}= \dfrac{3}{4}$

So, $4v+16=\dfrac{9v}{2} \Longrightarrow v= 32$

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Re: The Binary Ice Cream Shoppe sells two flavors, vanilla and chocolate. On friday, the ratio of vanilla cones sold to

by Scott@TargetTestPrep » Sat Nov 28, 2020 1:23 pm

BTGmoderatorDC wrote: ↑
Mon Nov 16, 2020 5:55 pm
The Binary Ice Cream Shoppe sells two flavors, vanilla and chocolate. On friday, the ratio of vanilla cones sold to chocolate cones sold was 2 to 3. If the store had sold 4 more vanilla cones, the ratio of vanilla cones sold to chocolate cones sold would have been 3 to 4. How many vanilla cones did the store sell on Friday?

A) 32
B) 35
C) 42
D) 48
E) 54

OA A

Solution:

We can create the ratio:

vanilla : chocolate = 2x : 3x

Had the store sold 4 more vanilla cones, the ratio of vanilla cones sold to chocolate cones sold would have been 3 to 4. So we can create the equation:

(2x + 4)/3x = 3/4

4(2x + 4) = 9x

8x + 16 = 9x

16 = x

Thus, the store sold 32 vanilla cones on Friday.

Answer: A

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