Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.
Customized for You
we will pick new questions that match your level based on your Timer History
Track Your Progress
every week, we’ll send you an estimated GMAT score based on your performance
Practice Pays
we will pick new questions that match your level based on your Timer History
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Thank you for using the timer!
We noticed you are actually not timing your practice. Click the START button first next time you use the timer.
There are many benefits to timing your practice, including:
Does GMAT RC seem like an uphill battle? e-GMAT is conducting a free webinar to help you learn reading strategies that can enable you to solve 700+ level RC questions with at least 90% accuracy in less than 10 days. Sat., Oct 19th at 7 am PDT
A grocer has 400 pounds of coffee in stock, 20 percent
[#permalink]
Show Tags
Updated on: 25 Jul 2014, 23:06
2
7
00:00
A
B
C
D
E
Difficulty:
5% (low)
Question Stats:
93% (01:14) correct 7% (01:56) wrong based on 841 sessions
HideShow timer Statistics
A grocer has 400 pounds of coffee in stock, 20 percent of which is decaffeinated. If the grocer buys another 100 pounds of coffee of which 60 percent is decaffeinated, what percent, by weight, of the grocer’s stock of coffee is decaffeinated?
Re: A grocer has 400 pounds of coffee in stock, 20 percent
[#permalink]
Show Tags
25 Jul 2014, 22:54
1 , 20% of 400 mean 320 , Next 60% of 100 mean 40 … so on total 360 is the coffee Out of total 500 pounds of coffee. 500 is 100% , 360 pounds = ?%..... 3600/500 = 72% is Original it mean 28%is Decaffeinated. So A
2, Using multipliers… 20% mean 0.2 60% mean 0.6 …. So multiplying both the multipliers 0.12 ??
Can anyone solve this using multipliers as approach?
_________________
I welcome analysis on my posts and kudo +1 if helpful. It helps me to improve my craft.Thank you
Re: A grocer has 400 pounds of coffee in stock, 20 percent
[#permalink]
Show Tags
27 Jul 2014, 04:45
4
1. 20% of 400=80 pounds of decaffeinated coffee 2. 60% of 100=60 pounds of decaffeinated coffee 3. Wt have 140 pounds of decaffeinated out of 500 pounds, that means 140/500*100%=28%. The correct answer is A.
_________________
I'm happy, if I make math for you slightly clearer And yes, I like kudos:)
Re: A grocer has 400 pounds of coffee in stock, 20 percent
[#permalink]
Show Tags
27 Jul 2014, 04:47
1
kanusha wrote:
1 , 20% of 400 mean 320 , Next 60% of 100 mean 40 … so on total 360 is the coffee Out of total 500 pounds of coffee. 500 is 100% , 360 pounds = ?%..... 3600/500 = 72% is Original it mean 28%is Decaffeinated. So A
2, Using multipliers… 20% mean 0.2 60% mean 0.6 …. So multiplying both the multipliers 0.12 ??
Can anyone solve this using multipliers as approach?
Kanusha, never mix percents if you take them from different numbers!
In this case decaffeinated coffee= 0.2*400+0.6*100=140. So, again 140/500*100%=28%.
_________________
I'm happy, if I make math for you slightly clearer And yes, I like kudos:)
Re: A grocer has 400 pounds of coffee in stock, 20 percent
[#permalink]
Show Tags
20 Dec 2017, 12:28
1
kanusha wrote:
A grocer has 400 pounds of coffee in stock, 20 percent of which is decaffeinated. If the grocer buys another 100 pounds of coffee of which 60 percent is decaffeinated, what percent, by weight, of the grocer’s stock of coffee is decaffeinated?
A. 28% B. 30% C. 32% D. 34% E. 40%
Since the grocer has 400 pounds of coffee in stock, 20 percent of which is decaffeinated, 0.2 x 400 = 80 pounds are decaffeinated.
Since the grocer buys another 100 pounds of coffee, 60 percent of which is decaffeinated, the grocer has 60 more pounds of decaffeinated coffee.
Thus, the percentage of decaffeinated coffee is (80 + 60)/(400 + 100) = 140/500 = 28/100 = 28%.
Re: A grocer has 400 pounds of coffee in stock, 20 percent
[#permalink]
Show Tags
27 Aug 2019, 03:57
kanusha wrote:
A grocer has 400 pounds of coffee in stock, 20 percent of which is decaffeinated. If the grocer buys another 100 pounds of coffee of which 60 percent is decaffeinated, what percent, by weight, of the grocer’s stock of coffee is decaffeinated?
Re: A grocer has 400 pounds of coffee in stock, 20 percent
[#permalink]
Show Tags
28 Aug 2019, 04:27
1
kanusha wrote:
A grocer has 400 pounds of coffee in stock, 20 percent of which is decaffeinated. If the grocer buys another 100 pounds of coffee of which 60 percent is decaffeinated, what percent, by weight, of the grocer’s stock of coffee is decaffeinated?
A. 28% B. 30% C. 32% D. 34% E. 40%
It is a weighted average problem.
Concentration of decaf in original inventory = 20% Concentration of decaf in new inventory = 60%
Re: A grocer has 400 pounds of coffee in stock, 20 percent
[#permalink]
Show Tags
28 Aug 2019, 04:31
VeritasKarishma wrote:
kanusha wrote:
A grocer has 400 pounds of coffee in stock, 20 percent of which is decaffeinated. If the grocer buys another 100 pounds of coffee of which 60 percent is decaffeinated, what percent, by weight, of the grocer’s stock of coffee is decaffeinated?
A. 28% B. 30% C. 32% D. 34% E. 40%
It is a weighted average problem.
Concentration of decaf in original inventory = 20% Concentration of decaf in new inventory = 60%
close
93% (01:14) correct 
