50% of the factory workers are not older than 30 years old. What percent of the factory workers are younger than 40 years old?
1. 30% of the factory workers are older than 30 but younger than 40 years old
2. 20% of the factory workers are at least 40 years old
How will i find the correct statement in this?
OA D
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50% of the factory workers
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Think of the workers as divided into three age groups:lheiannie07 wrote:50% of the factory workers are not older than 30 years old. What percent of the factory workers are younger than 40 years old?
1. 30% of the factory workers are older than 30 but younger than 40 years old
2. 20% of the factory workers are at least 40 years old
How will i find the correct statement in this?
OA D
- Those 30 or younger
- Those between 30 and 40
- Those 40 or older
If we want the percent 40 or younger, then we want the sum of the first two groups.
Statement 1. Now we know:
- Those 30 or younger: 50%
- Those between 30 and 40: 30%
Clearly we can find the sum: 50+ 30 = 80% Sufficient.
Statement 2: Now we know
- Those 40 or older: 20%
Well, everyone else would be under 40. 100% - 20% = 80%. Sufficient.
The answer is D
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BTGmoderatorDC
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Thanks a lot!DavidG@VeritasPrep wrote:Think of the workers as divided into three age groups:lheiannie07 wrote:50% of the factory workers are not older than 30 years old. What percent of the factory workers are younger than 40 years old?
1. 30% of the factory workers are older than 30 but younger than 40 years old
2. 20% of the factory workers are at least 40 years old
How will i find the correct statement in this?
OA D
- Those 30 or younger
- Those between 30 and 40
- Those 40 or older
If we want the percent 40 or younger, then we want the sum of the first two groups.
Statement 1. Now we know:
- Those 30 or younger: 50%
- Those between 30 and 40: 30%
Clearly we can find the sum: 50+ 30 = 80% Sufficient.
Statement 2: Now we know
- Those 40 or older: 20%
Well, everyone else would be under 40. 100% - 20% = 80%. Sufficient.
The answer is D
