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A baby's T-shirt requires 4/5[br]yards of fabric, or 4/5 of a
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yard of fabric.
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How many T-shirts can be[br]made from 48 yards?
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So what we want to do is we[br]essentially want to say how
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many groups of 4/5 of a yard[br]can we make with 48 yards?
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So you literally view this as[br]we want to take 48 yards and
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divide it into groups of 4/5[br]of a yard, and say how many
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groups are there?
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Because each of those[br]groups can make
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one to baby's T-shirt.
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If you give me 4/5 of a yard,[br]one baby's T-shirt, so the
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number of groups of 4/5 is the[br]number of babies' T-shirts.
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Now, when we divide by a[br]fraction, we just have to
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remember that that is the same[br]thing, that is completely
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equivalent to multiplying[br]times the
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reciprocal of the fraction.
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So if we have 4/5 here,[br]that'll be 5/4, the
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reciprocal.
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Now, you still might say, hey, I[br]have a whole number here and
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a fraction, and you just have[br]to remember any whole number
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can be written as a fraction.
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This is the same thing[br]as 48/1 times 5/4.
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Now, we could just multiply it[br]out at this point and figure
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out what 48 times 5 is and[br]that'll be over 4, but that'll
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get big numbers and it'll be[br]hard to kind of divide and all
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that, but we could divide at[br]this stage right here.
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We could divide the numerator[br]and the denominator by 4.
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Or we could say, look, this is[br]going to be equal to 48 times
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5, whatever that is, over 4.
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Now, let's divide the[br]numerator by 4.
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Well, we could divide 48 by 4,[br]and we will get to 12, and
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whatever we did to the[br]numerator, we have to do to
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the denominator, so if we[br]divide 4 by 4, we get 1.
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So then we're left with 12 times[br]5, which is equal to 60.
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12 times 5, which is equal to[br]60/1, which is the exact same
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thing as 60.
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So you can actually make 60[br]children's or babies' T-shirts
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from 48 yards if each of[br]them use 4/5 of a yard.
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