Latest CAT Aptitude Question SOLUTION: .A person normally spends 70% of his income. If his income increases by 15% and the expenditure decreases by 5% what is the percentage change in his savings?

• Placement Papers
• /
• CAT
• /
• Numerical Ability

CAT Question Papers:

(#M40155272) CAT Numerical Ability question Profit and Loss Keep an EYE

.A person normally spends 70% of his income. If his income increases by 15% and the expenditure decreases by 5% what is the percentage change in his savings?

Asked In CAT amarnath kamaraj (8 years ago)

Unsolved Read Solution (3)

Is this Puzzle helpful?   (5)   (0) Submit Your Solution

Read Solution (3) :

SHUBHAM  (8 years ago)

let income is 100 rs.
he spends 70rs.
income increase 15 % so it becomes 115.
spending decrease by 5 % then it becomes 65 % .
65% of 115 is 74.75.
then his saving is 115-74.75=40.25
so saving is = ( 40.25-30)*100/30=34.166%

Is this solution Helpfull? Yes (1) | No (1)  

Devendra Marghade  (8 years ago)

34.166%

If initial income=x, then saving with 70% spending=x- 0.7x=0.3x
With 15% increase in income, new income=x*115/100=1.15x and
New saving with 5% decrease in expenditure(i.e. 65%) =1.15x - 1.15x*65/100=0.4025x
So % change in saving=(0.4025x - 0.3x)*100/0.3x=10.25x/0.3x=102.5/3=34.166

Is this solution Helpfull? Yes | No (1)  

SAISANDEEP  (8 years ago)

in 100% he spends 70% + income increses 15% + total 115%+and decreases 5% = 115%-5 %=110%
and total 110%- 70%=40%
his savings was= 40% only

Is this solution Helpfull? Yes | No (1)  

Please Login to Read Solution.