Question

The nurse weighs the newborn recording 6 pounds 1 ounces. At birth, the newborn infant weighed 6 pounds 9 ounces. The nurse correctly calculates that this is what % of weight loss? ____%

Answer 1

So the first step is to convert pound and ounce into kg.

1 pound =0.454 kg

1 ounce =0.0283 kg.

Now we have to convert the the child birth weight and present weight into kg

At present 6 pound and 1 ounce. = 6×0.454+1×0.0283

=2.7523 kg.

At birth is 6 pound and 9 ounce.

= 6×0.454+9×0.0283

=2.9787 kg.

Now we have to eliminate the decimals for easy calculation so multiply the numerator and denominator with 10000.

Percentage of present weight =present weight ÷birth weight ×100

=27523÷29787×100

=92.39%.

Percentage of weight loss =100 - percentage of present weight.

=100-92.39

=7.61%

So the child's weight loss is 7.61 percentage.