Mr Lam always saves 4/5(fraction)
of his monthly salary. If his monthly salary is increased by $324, his monthly savings will be $3944. How much is Mr Lam's monthly salary before the increase?
Answers
Solution :-
Let us assume that, Mr. Lam monthly salary was $x .
so,
→ His saving = (4/5) of x = $(4x/5)
now,
→ new salary = $(x + 324) .
then,
→ saving = (4/5) * (x + 324)
A/q,
→ (x +324)(4/5) = 3944
→ 4x + 1296 = 3944 * 5
→ 4x = 19720 - 1296
→ 4x = 18424
→ x = $4606 (Ans.)
Hence, monthly salary before increase was $4606.
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Given : Mr Lam always saves 4/5(fraction) of his monthly salary. his monthly salary is increased by $324, his monthly savings will be $3944.
To Find : How much is Mr Lam's monthly salary before the increase?
Solution:
Let say Mr. Lam salary before increase = 5P $
Saving = (4/5)5P = 4P $
salary is increased by $324
New salary = 5P + 324 $
New Saving = (4/5)(5P + 324)
= 4P + 259.2
4P + 259.2 = 3944
=> 4P = 3,684.8
=> P = 921.2
=> 5P = 4,606
Lam's monthly salary before the increase = 4,606 $
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