Question 13 exercise 1 b of study material
https://220.227.161.86/19646chapter-1.pdf
A:B=3:2 and B:C= 3:5 than A:B:C is ?
Answer is 9:6:10
4 Replies
Sohil
(Learner)
(631 Points)
Replied 05 November 2011
I searched the web.
Found this..
if A:B=a:b and B:C=c:d than A:B:C is ac:bc:bd
Hence i get the correct answer.
But now i am unable to find the logic to above conclusion.In sense how was the formula derived ?
ACCOUNTANT
(Student)
(559 Points)
Replied 06 November 2011
Since the ratio's are representing 3 terms......inorder to get a common ratio you've to get the common variable in both the ratios equal so that it corresponds in given proportion to the other two variables involved......
Here since B is common in both by multiplying with some no. it is made equal in both ratios......and correspondingly in order to satisfy with the ratio's you multiply the same no for other involved(that becomes 3 or c in first ratio and 2 or b in the second ratio.......
Sohil
(Learner)
(631 Points)
Replied 06 November 2011
Thanks swetha now i got the logic.thanks again
Next doubt question 25 page 21 indices.
Idea how to solve it?
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