Question

Renna pushed the button for the elevator to go up, but it would not move. The weight limit for the elevator is 450 kilograms, but the current group of passengers weighs a total of 750 kilograms. Renna wants to determine how many 70-kilogram passengers need to get off the elevator.
Let p represent the number of excess passengers. Write an inequality to determine the number of passengers who need to get off the elevator to meet the weight requirement.

Answer 1

Weigth limit: 450 kg

Passengers weight: 750 kg

Excess weight: 300 kg

Number of 70 kg - passengers: p

Inequality:

70p  ≥ 300 kg 

Solution of the inequality:

p ≥ 300/70

p ≥ 4.3

Given that p is integer, p ≥ 5

Of course, p must also be less than the initial number of passengers.