Answer :
To calculate the baby's weight gain, convert to ounces (298 oz at 11 months, 322 oz at 12 months), subtract (322 oz - 298 oz = 24 oz), and convert back to pounds and ounces to find a gain of 1 lb 8 oz. Correct answer is option B.
Convert the weights to ounces: 18 lb 10 oz = (18 * 16) + 10 = 298 oz and 20 lb 2 oz = (20 * 16) + 2 = 322 oz
Calculate the weight gained: 322 oz - 298 oz = 24 oz
Convert 24 oz to pounds and ounces: 24 oz ÷ 16 = 1 lb 8 oz
Therefore, the correct answer is B. 1 lb 8 oz.
The baby gained B) 1 pound 8 ounces during the month.
To find out how much weight the baby gained during the month, we need to subtract the baby's weight at 11 months from her weight at 12 months.
First, convert both weights to ounces. There are 16 ounces in a pound.
11-month weight:
- 18 pounds 10 ounces = (18 × 16) + 10 = 288 + 10 = 298 ounces
12-month weight:
- 20 pounds 2 ounces = (20 × 16) + 2 = 320 + 2 = 322 ounces
Now, subtract the 11-month weight from the 12-month weight:
322 ounces - 298 ounces = 24 ounces
Next, convert 24 ounces back to pounds and ounces:
Since 16 ounces = 1 pound, we have:
- 24 ounces = 1 pound and 8 ounces