Explanation:

Let’s break this down step by step.

Toy A:

- Battery Capacity: 1500 units, 80% = 0.8 × 1500 = 1200 units start charge

- Battery lasts from 9 AM to 11 AM = 2 hours = 120 minutes

- So, battery consumed in 2 hrs: 1200 units

Toy A’s movement rates:

We don’t know NM/min or HR/min for Toy A yet. Let’s call NM/min of A = x, HR/min of A = y.

Consumption rule: Every 4th NM + 3rd HR together ? 1 unit consumed.

But Toy A fully discharges 1200 units in 120 minutes. So:

Total units consumed = 1200

So every "consumption set" = (4 NM + 3 HR) = 1 unit, and total number of sets = 1200

So, in 120 minutes, Toy A did:

NM: 1200 × 4 = 4800

HR: 1200 × 3 = 3600

So per minute:

NM/min = 4800 / 120 = 40

HR/min = 3600 / 120 = 30

Toy B:

Battery Capacity = 2000 units, 75% = 0.75 × 2000 = 1500 units

NM/min for B = 30

HR/min for B = 50% of Toy A’s NM/min = 50% × 40 = 20

Toy C:

Battery Capacity = 120% of Toy B = 1.2 × 2000 = 2400 units, 60% = 0.6 × 2400 = 1440 units

NM/min for C = Toy A NM/min + 5 = 40 + 5 = 45

HR/min = 30

To answer the percent difference:

Sum all NM/min:

Toy A: 40

Toy B: 30

Toy C: 45

Total NM/min = 40 + 30 + 45 = 115

Sum all HR/min:

Toy A: 30

Toy B: 20

Toy C: 30

Total HR/min = 30 + 20 + 30 = 80

Percent more = ((NM/hr - HR/hr)/HR/hr) × 100 = ((115-80)/80) × 100 = (35/80) × 100 = 43.75%

Now for your requested format:

- Toy A’s NM/min is 40, HR/min is 30.

- Toy B’s NM/min is 30, HR/min is 20.

- Toy C’s NM/min is 45, HR/min is 30.

- Together, NM/min = 115, HR/min = 80.

- So, NM/min is 43.75% more than HR/min.

Option 5 – 43.75% is correct.