Explanation:
3)
No. of wooden boxes is less than 9
x< 9
No. of plastic boxes is not more than 10
y ≤ 10
Weight equation
Wood box 6 kg Plastic box 3 kg total 36 kg
which means that the weight that can be carried must be greater than or equal to the actual weight
6x + 3y ≥ 36
Volume equation
Wood box 0.25 m² Plastic box 0.5 m² total 3 m²
which means that the capacity of boxes must be greater than or equal to the capacity of actual load
0.25x + 0.5y ≥ 3
4) Let the no. of RM100 tickets be x and no. of RM150 tickets be y
no. of RM100 tickets is more than no. of RM150 tickets.
x > y
Total price exceeds 3000
100x + 150y > 3000