How Many His Saving Salary Increased ? If

A man spends 75% of his income. His income is increased by 20% and he increased his expenditure by 10%. His saving are increased by

  1. 37.5%
  2. 50%
  3. 10%
  4. 25%
Anurag Mishra Professor Asked on 14th August 2015 in Maths.
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2 Answer(s)

Answer: (1) 37.5%

Explanation:-
Let the income of a man be Rs.X
A man spends 75% of his income,
Then, Saving = X – X x 75/100
= X – 3 X/ 4
= X / 4

His income is increased by 20%
Then, the income = X x 120/100
= 6 X/5
Increased his expenditure 10 %
Then, 3 X x 110/4 x 100
= 33 X /40
New Saving = 6 X / 5 – 33 X/ 40
= (8 x 6 X – 33 X)/40
= (48 X – 33 X)/40
= 15 X /40 = 37 .5
Saving increased by  37.5 %.

Hence, the answer is (1) 37.5%.

 

Anurag Mishra Professor Answered on 14th August 2015.
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2. 50%

exp

previous saving- 25
new saving-37.5
increase in saving -37.5-25 12.5
% increase= 12.5/25*100

NarmadeshwarSingh Newbie Answered on 16th August 2015.
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