A newborn weighs 3,459 grams. There are 453.59 grams per pound. What is the infant's weight in pounds and ounces?

Rationale

7lbs 10oz.

To convert the newborn's weight from grams to pounds and ounces, we first divide the total grams by the number of grams per pound (453.59) to find the weight in pounds, which results in approximately 7.63 pounds. This value translates to 7 pounds and 10 ounces when converted into the mixed unit format.

A (7lbs 10oz.) CORRECT

This choice correctly reflects the conversion of 3,459 grams to pounds and ounces. After dividing 3,459 by 453.59, we find approximately 7.63 pounds, which equals 7 pounds and 10 ounces (since 0.63 pounds equates to about 10 ounces).

B (10lbs 7oz.) YOUR ANSWER

This choice is incorrect because 10 pounds would correspond to a weight of 4,536 grams (10 x 453.59), which exceeds the actual weight of 3,459 grams. Therefore, it cannot be the correct conversion of the newborn's weight.

C (13lbs 3oz.) YOUR ANSWER

This option is also incorrect, as 13 pounds corresponds to 5,897 grams (13 x 453.59), significantly greater than 3,459 grams. Thus, this choice does not accurately represent the infant's weight.

D (3lbs 13oz.) YOUR ANSWER

While this choice might seem plausible, it translates to about 1,703 grams (3 x 453.59 + 13 oz), which is much less than 3,459 grams. Therefore, it does not reflect the correct conversion.

Conclusion

The correct conversion of the newborn's weight of 3,459 grams results in 7 pounds and 10 ounces. This calculation underscores the importance of accurate unit conversion in determining an infant's weight, ensuring that each choice is assessed against the actual weight in grams to identify the correct answer.

A newborn weighs 3,459 grams. There are 453.59 grams per pound. What is the infant's weight in pounds and ounces?

7lbs 10oz.

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