0:00:00.000,0:00:00.610 0:00:00.610,0:00:06.150 A baby's T-shirt requires 4/5[br]yards of fabric, or 4/5 of a 0:00:06.150,0:00:07.470 yard of fabric. 0:00:07.470,0:00:11.190 How many T-shirts can be[br]made from 48 yards? 0:00:11.190,0:00:13.250 So what we want to do is we[br]essentially want to say how 0:00:13.250,0:00:18.430 many groups of 4/5 of a yard[br]can we make with 48 yards? 0:00:18.430,0:00:24.680 So you literally view this as[br]we want to take 48 yards and 0:00:24.680,0:00:29.810 divide it into groups of 4/5[br]of a yard, and say how many 0:00:29.810,0:00:30.610 groups are there? 0:00:30.610,0:00:32.430 Because each of those[br]groups can make 0:00:32.430,0:00:33.740 one to baby's T-shirt. 0:00:33.740,0:00:37.110 If you give me 4/5 of a yard,[br]one baby's T-shirt, so the 0:00:37.110,0:00:40.720 number of groups of 4/5 is the[br]number of babies' T-shirts. 0:00:40.720,0:00:43.340 Now, when we divide by a[br]fraction, we just have to 0:00:43.340,0:00:45.970 remember that that is the same[br]thing, that is completely 0:00:45.970,0:00:51.030 equivalent to multiplying[br]times the 0:00:51.030,0:00:52.365 reciprocal of the fraction. 0:00:52.365,0:00:56.700 So if we have 4/5 here,[br]that'll be 5/4, the 0:00:56.700,0:00:57.660 reciprocal. 0:00:57.660,0:00:59.960 Now, you still might say, hey, I[br]have a whole number here and 0:00:59.960,0:01:02.470 a fraction, and you just have[br]to remember any whole number 0:01:02.470,0:01:04.099 can be written as a fraction. 0:01:04.099,0:01:11.340 This is the same thing[br]as 48/1 times 5/4. 0:01:11.340,0:01:14.040 Now, we could just multiply it[br]out at this point and figure 0:01:14.040,0:01:19.380 out what 48 times 5 is and[br]that'll be over 4, but that'll 0:01:19.380,0:01:21.650 get big numbers and it'll be[br]hard to kind of divide and all 0:01:21.650,0:01:23.700 that, but we could divide at[br]this stage right here. 0:01:23.700,0:01:26.230 We could divide the numerator[br]and the denominator by 4. 0:01:26.230,0:01:30.240 Or we could say, look, this is[br]going to be equal to 48 times 0:01:30.240,0:01:34.070 5, whatever that is, over 4. 0:01:34.070,0:01:36.370 Now, let's divide the[br]numerator by 4. 0:01:36.370,0:01:40.500 Well, we could divide 48 by 4,[br]and we will get to 12, and 0:01:40.500,0:01:42.090 whatever we did to the[br]numerator, we have to do to 0:01:42.090,0:01:45.750 the denominator, so if we[br]divide 4 by 4, we get 1. 0:01:45.750,0:01:51.090 So then we're left with 12 times[br]5, which is equal to 60. 0:01:51.090,0:01:56.820 12 times 5, which is equal to[br]60/1, which is the exact same 0:01:56.820,0:01:58.540 thing as 60. 0:01:58.540,0:02:02.960 So you can actually make 60[br]children's or babies' T-shirts 0:02:02.960,0:02:07.300 from 48 yards if each of[br]them use 4/5 of a yard. 0:02:07.300,0:02:07.734