Chef Roberto baked a 32-pound turkey. He served #5/8# of the turkey to customers at his restaurant. How many pounds of turkey were served?

1 Answer
Mar 11, 2018

#20^(lb)#

Explanation:

#color(blue)("A very important set of facts")#

A fraction has a very specific structure and when explaining what they do I tend to use more descriptive names. They also have 'official' names

#("top number")/("bottom number")->("numerator")/("denominator") ->("count")/("size indicator")#

The 'size indicator' (denominator") is an indication how how many 'equally sized bits' you would have to put together to make a whole of something.

The count (numerator) is telling you how many of those 'bits' you actually have.

For addition and or subtraction:
#color(brown)("You can not DIRECTLY add or subtract the counts unless")##color(brown)("The size indicators are the same.")#

Multiplication is different as explained in this solution
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
#color(blue)("Answering the question")#

#color(brown)("Explaining")#

We have #5/8# of a 32-pound turkey

In mathematics the word 'of' is usually interpreted as multiply. So we have:

#5/8xx"a bird weighing 32"^("lb")#

This is the same as

#5xx("a bird weighing 32"^("lb"))/8#

So we are cutting the bird up into 8 equal weight 'bits' and we are counting out 5 of those bits.

#color(brown)("Doing the calculation")#

In weight this gives

#5xx(32^(lb))/8 = 5xx4^(lb)=20^(lb) #