If a:b = 7:9 and b:c=6:7 then a:c is option is
A) 2:3
B) 3:2
C) 2:7
D) 1:3
Answers
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3
Answer:
A:B=7:9
B:C=6:7
A:C=?
Now, A:B=7:9
or,
B
A
=
9
7
...(1)
& B:C=6:7
or,
C
B
=
7
6
...(2)
Multiplying (1) & (2)
B
A
×
C
B
=
9
7
×
7
6
or,
C
A
=
3
2
or, A:C=2:3
answer option A
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