At birth a baby weighed 8 pounds 4 ounces. Two days later the baby weighted 7 pounds 12 ounces. What percent of it's weight had it lost? (show me the steps please)
To find the percent of weight lost, you need to calculate the difference between the initial weight and the final weight, and then express that as a percentage of the initial weight.
Step 1: Convert the weight to a common unit (either pounds or ounces). Let's convert both weights to ounces for consistency:
Initial weight: 8 pounds 4 ounces = (8 * 16) + 4 = 132 ounces.
Final weight: 7 pounds 12 ounces = (7 * 16) + 12 = 124 ounces.
Step 2: Calculate the weight difference:
Weight difference = Initial weight - Final weight
Weight difference = 132 ounces - 124 ounces = 8 ounces.
Step 3: Calculate the percentage of weight lost:
Percentage of weight lost = (Weight difference / Initial weight) * 100
Percentage of weight lost = (8 ounces / 132 ounces) * 100 ≈ 6.06%.
Therefore, the baby has lost approximately 6.06% of its initial weight.
First, let's convert the weights to
decimals.
8 pounds, 4 ounces = 8.25
7 pounds, 12 ounces = 7.75
8.25 - 7.75 = 0.5
0.5 / 8.25 = 0.060606 = 6.06%