Hi there, here's your answer:
From the question,
Given:
Weight limit for the lift = 1000kg
Mean weight of 10 people = 70kg
Therefore, the total weight of 10 people inside the lift is 70 × 10 = 700kg.
Now, remaining weight that can fit in the lift is 1000 - 700 = 300kg.
Assuming the mean weight of the people who get inside the lift is constant, we find the closest number of people who can get inside the lift to be:
300 ÷ 70 = 4.285
Or
Roughly 4 more people.
Hope it helps!