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Bunuel
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At a local gym there were 55 people working out at 4 p.m., of those pe 09 Oct 2019, 00:31
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E
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!

Difficulty:

5% (low)

Question Stats:

89% (01:20) correct 11% (01:45) wrong based on 62 sessions

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At a local gym there were 55 people working out at 4 p.m., of those people 29 did cardio-vascular exercises and 20 did weight training. If 13 did neither cardio-vascular exercises nor weight training, then how many people did both cardio-vascular exercises and weight training?

A. 62
B. 49
C. 13
D. 12
E. 7
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E
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At a local gym there were 55 people working out at 4 p.m., of those pe 09 Oct 2019, 10:59
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Bunuel
At a local gym there were 55 people working out at 4 p.m., of those people 29 did cardio-vascular exercises and 20 did weight training. If 13 did neither cardio-vascular exercises nor weight training, then how many people did both cardio-vascular exercises and weight training?

A. 62
B. 49
C. 13
D. 12
E. 7
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solve using 2x2 matrix
IMO E ; 7
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At a local gym there were 55 people working out at 4 p.m., of those pe 12 Oct 2019, 17:09
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Bunuel
At a local gym there were 55 people working out at 4 p.m., of those people 29 did cardio-vascular exercises and 20 did weight training. If 13 did neither cardio-vascular exercises nor weight training, then how many people did both cardio-vascular exercises and weight training?

A. 62
B. 49
C. 13
D. 12
E. 7
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We can create the equation:

55 = 29 + 20 - both + 13

55 = 62 - both

both = 7

Answer: E
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At a local gym there were 55 people working out at 4 p.m., of those pe 12 Oct 2019, 23:38
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Bunuel
At a local gym there were 55 people working out at 4 p.m., of those people 29 did cardio-vascular exercises and 20 did weight training. If 13 did neither cardio-vascular exercises nor weight training, then how many people did both cardio-vascular exercises and weight training?

A. 62
B. 49
C. 13
D. 12
E. 7
Show more

People who worked Cardio and Weight is 55 - 13 = 42

Now, 29 did cario and 20 did weight training , ie 49 since it is > 42 there is double counting on part of people who did both....

So, People who did both is 49 - 42 = 7 , Answer must be (E) 7
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