Question

Hello can some one please help me with question 7.

6. A sign in a lift says that it can carry a maximum of 12 passengers and a maximum load of 720 kg. A class of Grade 8 learners wants to use the lift. If the average mass of one learner is 48 kg, how many learners can use the lift at one time?

7. A team of weightlifters also wants to use the lift in Question 6. They work out that they will have to use the lift in groups of eight. Calculate the average mass of one weightlifter.​

Answer 1

Below

Explanation:

720 kg / 48 kg / passenger = 15 passengers which is passed the max allowable ....so it can only carry 12 of the learners per placard.

720 kg = 8 * lifter

lifter = 720 kg / 8 = 90 kg each lifter