9. Find the value of A and B in B. A
x B 3
5 7 A
A. A = 5 and B = 2
B. A = 5 and B = 5
C. A = 2 and B = 2
D. A = 2 and B = 5
A
Answers
Step-by-step explanation:
MATHS
If a:b=
9
2
:
3
1
,b:c=
7
2
:
14
5
,d:c=
10
7
:
5
3
, then find a:b:c:d.
ANSWER
b
a
=
9
2
÷
3
1
=
9
2
×
1
3
,
c
b
=
7
2
÷
14
5
=
7
2
×
5
14
=
5
4
c
d
=
10
7
÷
5
3
=
10
7
×
3
5
=
6
7
⇒
d
c
=
7
6
⇒a=
3
2b
,c=
4
5b
,d=
6
7c
=
6
7
×
4
5b
=
24
35b
∴a:b:c:d=
3
2b
:b:
4
5b
×24:
24
35b
=16:24:30:35.
Answered By
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