A
′
s salary is first increased by 25% and then decreased by 20%. The result is the same as B's salary increased by 20% and then reduced by 25%. Find the ratio of B
′
s salary to that of A
′
s?
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Answered by
1
Answer:
Let Salary of A be =x, Salary of B be =y
Net effect after changes in A
s salary
=25−20−
100
20×25
=0
Net effect after changes in B
′
s salary
=20−25−
100
25×20
=20−30=−10
i.e. B
′
s Salary 90% of y
ATQ
x=
100
90
y⇒
y
x
=
10
9
Required ratio =10:9.
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