Border Patrol Practice Exam

What is the total weight of the two heavier canines if the average weight is 130 lbs and one weighs 110 lbs?

1. 130 lbs

2. 140 lbs

3. 150 lbs

4. 160 lbs

The correct answer is: 140 lbs

To determine the total weight of the two heavier canines, given that the average weight of the three canines is 130 lbs, we start by calculating the total weight of all three. The average can be found using the formula: \[ \text{Average} = \frac{\text{Total Weight}}{\text{Number of Items}} \] From this, we know: \[ 130 = \frac{\text{Total Weight}}{3} \] Multiplying both sides by 3 to find the total weight: \[ \text{Total Weight} = 130 \times 3 = 390 \text{ lbs} \] Next, we know that one of the canines weighs 110 lbs. To find the combined weight of the two heavier canines, we subtract the weight of the lighter canine from the total weight: \[ \text{Weight of the two heavier canines} = \text{Total Weight} - \text{Weight of the lighter canine} \] Substituting in the known values: \[ \text{Weight of the two heavier canines} = 390 - 110 = 280 \text{ lbs} \] However, to find the average of the two heavier canines