Aptitude - Profit and Loss - Discussion

Why do you add profit with maintenance cost? Explain me in clear manner.

@Naresh

Purchase price= 480
Maintenance cost= 480* 20/100=96
Profit=144
Total=96+144=240

% increase from puchase price
= (240/480)*100
=50%

How 50%?

Purchase price = 480
144/480 =3/10 ie 30%

already he spended 20%
now he needs to add 30%
so totally 50%

But whats the percentage is added in purchase price?

20% of 480 = 480*20/100 i.e. Rs.96
total c.p. = 480+96 i.e. 576
profit 144 i.e. s.p. = c.p.+ profit
= 576 + 144
= 720

20% of 480 i.e cost price is 96.
total cp = 480+96 = 576
to make a profit of 144 the selling price should be
576+144 = 720
if purchase price u meant is the COST PRICE..its hard to say
how would u make profit if u increase your costs investment

Please solve and explain to this question.

Q.1) A carpenter bought an old table at Rs 480 and spent 20% of it on repairing. If he wants to make a profit of Rs 144 then what percentage should be added in purchase price?

How did 5.5/11 come?

Gain% = (300 x 100)/5500

= 30000/5500

= 300/55

= 60/11

= 5.45454545....

= 5(5/11) [ after converting 5.4545.. into vulgar fraction]

Note: What is a vulgar fraction?

A fraction in the form of one integer divided by another, non-zero, integer.

A vulgar fraction is one where the numerator (the number on the top) is bigger than the denominator (the number on the bottom). More pedantically, the absolute value of the numerator is bigger than the absolute value of the denominator.

I hope you understand. Have a nice day!

I don't understand the how you get the 5(5/11).

I doesn't understand logic behind it please help me.