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Five people in a room weigh an average of 120 pounds each. When a sixt
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15 Mar 2021, 06:31
15 Mar 2021, 06:31
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Five people in a room weigh an average of 120 pounds each. When a sixth person enters, the average weight in the room increases to 125 pounds per person. What does the sixth person weigh?
130 pounds
135 pounds
140 pounds
145 pounds
150 pounds
Kudos for the right answer and explanation
Question part of the project GRE Quantitative Reasoning Daily Challenge - (2021) EDITION
GRE - Math Book
130 pounds
135 pounds
140 pounds
145 pounds
150 pounds
Kudos for the right answer and explanation
Question part of the project GRE Quantitative Reasoning Daily Challenge - (2021) EDITION
GRE - Math Book
Re: Five people in a room weigh an average of 120 pounds each. When a sixt
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15 Mar 2021, 07:44
15 Mar 2021, 07:44
1
Total weight of five persons = 120*5 = 600
When sixth is added, avg is 125
Total weight of six persons = 125 * 6 = 750
The weight of sixth person = 750 - 600 = 150
Answer E
When sixth is added, avg is 125
Total weight of six persons = 125 * 6 = 750
The weight of sixth person = 750 - 600 = 150
Answer E
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Re: Five people in a room weigh an average of 120 pounds each. When a sixt
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15 Mar 2021, 08:01
15 Mar 2021, 08:01
Carcass wrote:
Five people in a room weigh an average of 120 pounds each. When a sixth person enters, the average weight in the room increases to 125 pounds per person. What does the sixth person weigh?
130 pounds
135 pounds
140 pounds
145 pounds
150 pounds
130 pounds
135 pounds
140 pounds
145 pounds
150 pounds
Let each person weigh 120 pounds
120 120 120 120 120
After the sixth person, each must weigh 125 pounds
125 125 125 125 125 125
Since, each person's weight increased by 5 (on average) - the last person must be 120 + 5(6) = 150
Hence, option E
