There are 6 people in the elevator.

There are 6 people in the elevator. Their average weight is 160 lbs. Another person enters the elevator, and increases the average weight to 151 lbs. What is the weight of the 7th person.

Quiz

Answer/Solution

97

Steps/Work

Solution
Average of 7 people after the last one enters = 151 .
∴ Required weight = (7x151)-(6x160)
= 1057- 960
= 97.
Answer A

General Calculator / Auto Solver

There are people in the elevator. Their average weight is lbs. Another person enters the elevator, and increases the average weight to lbs. What is the weight of the th person.

Calculated Answer

97

Step by Step Solution

In order to solve problem, you must evaluate n2 * n3 - n0 * n1.

n0 =6
n1 =160
n2 =151
n3 =7