Zenin’s baby sister weighed 132 ounces at birth. How much did his sister weigh in pounds and ounces?
8 pounds and 4 ounces
If 1 pound = 16 ounces, we want to find how many pounds are in 132 ounces first.
x being the unknown number of pounds
Cross multiply this:
Isolate x by dividing both sides by 16
We see that the answer is 8.25 pounds, but since it wants it in pounds and ounces, we can see the whole number 8 is pounds. To find the ounces, we multiply the 0.25 by 16. (Note: 1 pound is 16 ounces, thus we multiply it by 16.)
So the answer is 8 pounds and 4 ounces.