SSAT Math Question 249: Answer and Explanation
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Question: 249
3. The mass required to engage the sensor for a passenger- side airbag is 108 pounds. What is the smallest mass a person carrying a 5 kg backpack can be to ensure the sensor is engaged? (1 kg = 2.20 lb).
- A. 103 lbs
- B. 97 lbs
- C. 54 lbs
- D. 49 lbs
Correct Answer: B
Explanation:
The answer is B
First, convert the kilograms to pounds, to have an apples-to-apples comparison: 5 × 2.2 = 11. As the required mass to engage is 108 pounds, the additional mass needed above the weight of the knapsack is 108 - 11 = 97.