Use 1 stone = 14 pounds to convert 7 stones into pounds.
The correct answer and explanation is:
To convert 7 stones into pounds using the conversion factor 1 stone = 14 pounds, multiply the number of stones by the number of pounds per stone.
Calculation:
7 stones × 14 pounds per stone = 98 pounds
Therefore, 7 stones is equal to 98 pounds.
Explanation:
The stone is a unit of weight commonly used in the United Kingdom and Ireland for measuring body weight. The pound is another unit of weight widely used in the United States and other countries that follow the imperial system. Because stones and pounds are both units of weight, it is straightforward to convert between them when the conversion factor is known.
The conversion factor means that each stone contains exactly 14 pounds. When converting from stones to pounds, the multiplication operation is appropriate because the total weight in pounds is a sum of multiple 14-pound units. For example, if one stone equals 14 pounds, then two stones equal 2 × 14 = 28 pounds, three stones equal 3 × 14 = 42 pounds, and so on.
By multiplying 7 stones by 14 pounds per stone, the calculation combines the number of stones and the weight of each stone into a total weight expressed solely in pounds. The units cancel out appropriately in the multiplication (stones × pounds/stone), leaving the final answer in pounds.
This method applies to any number of stones being converted. Conversions like this are useful in contexts such as personal weight measurements, where stones may be used for convenience but pounds might be required for specific records or international comparisons. It is important to use the exact conversion factor for accuracy in measurement conversions.
In summary, multiplying the quantity in stones by 14 gives the equivalent weight in pounds. Hence, 7 stones equals 98 pounds.