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kushum saran

· started a discussion

· 1 Months ago

regarding solution (Question: 186050.0 )

give detailed explanation

Question:
If A : B = 7 : 9 and B : C = 3 : 5, then A : B : C is equal to –
Options:
A) 7 : 9 : 5
B) 21 : 35 : 45
C) 7 : 9 : 15
D) 7 :   3 : 15
Solution:
Ans: (c) A : B = 7 : 9; B : C = 3 : 5 = 9 : 15

\(\Rightarrow\) A : B : C = 7 : 9 : 15

Sachin Singh

· commented

· 1 Months ago

A:B=7:9
B:C=3:5
A:B:C=7*3 :3*9 :9*5
=21 : 27 : 45
=7:9:15(divide by 3)

geeta

· commented

· 1 Months ago

A B C
7 9
3 5
--------------------------
7*3 : 9*3 : 9*5
21 : 27 : 45
7 : 9 : 15 { DIVIDED BY 3}
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