) If
b ∝ a³
and a increases in the ratio 3:5, find in what ratio b will be increased.
Answers
Answered by
0
Answer:
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Answered by
0
Step-by-step explanation:
16
3
2
Given x is inversely proportional to y
Thus, x=
y
k
where k is constant or,
x
2
x
1
=
y
1
y
2
Let x
1
=100 and y
1
=100
Since x
1
is increased by 20%,
let x
2
=120
Thus,
120
100
=
100
y
2
y
2
=
120
100×100
=83
3
1
Therefore, decrease in y
2
=
100
100−83.3
×100=16
3
2
%
Hence, option 'B' is correct.
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