00:00Plus b divided by b equals c minus d divided by c which equals e plus f divided by e which equals
00:04Since it equals 4 divided by 3
00:06The question asks for the ratio of a times c times f divided by b times d times e.
00:11Now, friends, I can write plus b divided by b like this, right?
00:14a divided by b plus b divided by b.
00:16So how should we write this, guys?
00:18c minus d divided by c is c divided by c minus d divided by c, which equals e divided by e plus
00:25I can also write the result as f divided by e.
00:29That's equal to 4 divided by 3.
00:30When I mark these separately, and then equate them, it becomes equal to a divided by b plus 1, which is b divided by b.
00:37It's equal to 4 divided by 3.
00:39So, what do we get from a divided by b, guys?
00:41What happens if we throw one to this side, guys?
00:43Of course, 1 in 3.
00:45We found that a divided by b is 1/3.
00:47Looking at the second one, friends, what does c divided by c mean in that part with 'c'?
00:511 minus d divided by c equals 4 divided by 3, right guys?
00:55Okay, if we move 4/3 to this side and minus d/c to that side, what do we get?
01:01d divided by c equals... what do we find it to be?
01:06We find it as minus 1 divided by 3, right?
01:10Yes, 3.
01:11Thirdly, what are we going to find, friends?
01:13E plus f divided by e.
01:15E divided by e is 1, plus f divided by e equals 4 divided by 3, folks.
01:21How do we find f divided by e from here?
01:24Again, 4/3 minus 1 equals 1/3, which gives us our answer.
01:28So what are we being asked?
01:31The question asks for a divided by b times c divided by d, which is equal to f divided by e.
01:37Okay, so I've separated the fraction lines, guys.
01:39What was a divided by b, guys?
01:42It was 1/3.
01:44What was c divided by d, guys?
01:46Now we have found d divided by c.
01:47If d divided by c is minus 1/3, then taking that to the power of minus 1 (remember from exponents)...
01:53What was happening?
01:53The numerator and denominator were swapped, right?
01:55c divided by that equals minus 3.
01:59Then it's minus 3 here.
02:02Multiplying f by e is 1/3.
02:04If we simplify one of these 3s, we get the answer as minus 1 divided by 3.
02:09Our answer is c minus 1/3.
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