Answer:
1) 620- 37.4p≤450
2) 5
Step-by-step explanation:
Total weight of rena and packages = 620 kg
lift limitation= 450 kg
mass of each load= 37.4 kgs
As the mass limit for the elevator is 450 kg therefore the from the Total weight of rena and packages (620 kgs) rena needs to subtract weight of some number of packages (p x 37.4)
hence
620- 37.4p≤450
2)
Solving for minimum whole number of packages p, rena needs to remove to meet the elevator limitation:
620- 37.4p≤450
37.4p≤-450+620
37.4p≥170
p≥4.5
rounding off to whole number
p≥5 !
