If a/b = 3/5 then 3a/2b = ?
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Answer:
Given, a:b=2:5
Could be written as
b
a
=
5
2
So, 5a=2b
a=
5
2b
Put the value of a in
4a+b
3a+2b
=
4(
5
2b
)+b
3(
5
2b
)+2b
=
5
8b+5b
5
6b+10b
=
5
13b
5
16b
=
5
16b
×
13b
5
=
13b
16b
=
13
16
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