Time Pass Math

[Krish]

Now let me cross check...gopi's version

 

45* 20 = 900

 

45- 5 = 40

 

now 40 * 22 = 880 

 

so this answer wrong...:(

[suthivelu]

Ok let me cross check 75 * 12 = 900

75 - 5 = 70

now...price up by 2 so 12+2 =14

so..70*14 = 980


Ok this is fine....as per cross checking...but 75 ela vachhindi??

x*y = 900
(X-5)(y+2) = 980 deentlo y = 900/x pedithe vasthundi kada motham rayataaniki square Lu ala sachinaay...solve chesuko man

[Krish]

x*y = 900
(X-5)(y+2) = 980 deentlo y = 900/x pedithe vasthundi kada motham rayataaniki square Lu ala sachinaay...solve chesuko man

 

xy +2x -5y -10 = 980

 

900 +2x -5y = 990

 

2x- 5y = 90

 

2x - 5(900/x) = 90

 

x * (x-45) = 2250

 

deenni intrepret chesi...x value cheppu...I was stuck here...

[bio]

Now let me cross check...gopi's version

 

45* 20 = 900

 

45- 5 = 40

 

now 40 * 22 = 880 

 

so this answer wrong... :(

 

nope buddy, 40 *22 = 880, but then there were 5 toys damaged @ 20 each comes upto 100, so you have to compensate that rs 100 equally to the 40 toys which comes rs 2.5, so the price of each toy is not 22 it will be 24.5 * 40 = 980..

[bio]

ok went outsyd, lemme try oder ppls version..

[Krish]

nope buddy, 40 *22 = 880, but then there were 5 toys damaged @ 20 each comes upto 100, so you have to compensate that rs 100 equally to the 40 toys which comes rs 2.5, so the price of each toy is not 22 it will be 24.5 * 40 = 980..

 

 

lol...answer made for question aa...

[bio]

ok answer ila icchadu website lo hav checked it jus now

 

Let assume he had x toys and bought it for Rs.y per piece.
Now, we can form these two equations from these
x*y = 900;//Total cost
(y+2)(x-5) = 900+80;//as he mad profit of Rs.80 by selling x-5 toys in Rs.(y+2).

 

xy + 2x -5y = 900+80;
2x-5y = 80;
2x-5*900/x = 80
2x^2 -4500 = 80x;
x^2 -40x – 2250 = 0;
(x-45)(x+5) = 0;
x = 45 and x =-5, as number of toys cant be negative, initial number of toys were 45.
Initial Cost = 900/45 = Rs.20.

[bio]

lol...answer made for question aa...

 

dude  simple question, 80 rs profit @ rs 2 increase per toy ani question lo icchadu, in that case how many toys will be there?? oder dan 40 there is no oder chance kada??

[bio]

A man had Rs.900 and brought some toys with all the money. Out of which 5 toys were defected. He sold all the remaining toys by increasing the price by Rs.2 and made a profit of Rs.80.
What is the no.of initial toys and the initial cost of toys?

 

ok so according to the question, each toy meeda rs2 increase cheste rs 80 profit vocchindi annadu, meeru cheppe 70 toys *rs 2 = 140 not 80, ah logic meeda meeru cheppina answer wrong annanu, correct me if m wrong here..

[Krish]

ok answer ila icchadu website lo hav checked it jus now

 

Let assume he had x toys and bought it for Rs.y per piece.
Now, we can form these two equations from these
x*y = 900;//Total cost
(y+2)(x-5) = 900+80;//as he mad profit of Rs.80 by selling x-5 toys in Rs.(y+2).

 

xy + 2x -5y = 900+80;
2x-5y = 80;
2x-5*900/x = 80
2x^2 -4500 = 80x;
x^2 -40x – 2250 = 0;
(x-45)(x+5) = 0;
x = 45 and x =-5, as number of toys cant be negative, initial number of toys were 45.
Initial Cost = 900/45 = Rs.20.

 

aa red lo x = 45 pedadaam...to cross check ok naa...(plus akkada 90x undaali..80x kadu...)

 

x2 -45x - 2250 = 0

 

x (x-45) = 2250

 

now.....45 (45 - 45 ) = 2250....idi wrong endukante...it becomes zero..

 

ade 75 pedithe...75(75-45) = 2250 

 

75* 30 = 2250.

[bio]

aa red lo x = 45 pedadaam...to cross check ok naa...(plus akkada 90x undaali..80x kadu...)

 

x2 -45x - 2250 = 0

 

x (x-45) = 2250

 

now.....45 (45 - 45 ) = 2250....idi wrong endukante...it becomes zero..

 

ade 75 pedithe...75(75-45) = 2250 

 

75* 30 = 2250.

 

nuvvu cheppina 75 assalu match kaavatledu, in the question it is clearly mentioned that by increasing the price of each toy by rs 2 he made a profit of rs 80 ani clear ga icchadu, so nuvvu cheppina 75 (ofcourse 70 toys due to 5 damaged) * 2 = 80 ki match avvatledu kada??

[Krish]

A man had Rs.900 and brought some toys with all the money. Out of which 5 toys were defected. He sold all the remaining toys by increasing the price by Rs.2 and made a profit of Rs.80.
What is the no.of initial toys and the initial cost of toys?

 

ok so according to the question, each toy meeda rs2 increase cheste rs 80 profit vocchindi annadu, meeru cheppe 70 toys *rs 2 = 140 not 80, ah logic meeda meeru cheppina answer wrong annanu, correct me if m wrong here..

 

lol...logic lo logic miss ayyav.... @3$%

 

aa answer prakaram...75*12 = 900

 

price up 2 cheste, 70* 14 = 980

[bio]

lol...logic lo logic miss ayyav.... @3$%

 

aa answer prakaram...75*12 = 900

 

price up 2 cheste, 70* 14 = 980

 

nenu kaadu bossu miss ayyindi,  70 * 14 = 980 (idi correct eh), but 70*2 # 80 (it needs to be 80 as per the given question)  :police:

[Krish]

nenu kaadu bossu miss ayyindi,  70 * 14 = 980 (idi correct eh), but 70*2 # 80 (it needs to be 80 as per the given question)  :police:

 

 

I see where u r coming from....aa profit comparison... includes the cost of those 5 damaged as well...so you can not use that figure for 70...

 

so  70 * 12 =  840, 

 

75*12 = 900,

 

 70* 14 = 980

 

so u cant actually relate them...since it includes the cost of 5

 

so 5 * 12 = 60

 

neeku 70* 2 = 140 kada...ee 5 price tesei...

 

140 - 60 = 80...:)

[bio]

I see where u r coming from....aa profit comparison... includes the cost of those 5 damaged as well...so you can not use that figure for 70...

 

so  70 * 12 =  840, 

 

75*12 = 900,

 

 70* 14 = 980

 

so u cant actually relate them...since it includes the cost of 5

 

so 5 * 12 = 60

 

neeku 70* 2 = 140 kada...ee 5 price tesei...

 

140 - 60 = 80... :)

 

ala relate cheyyakapothe how man, we have to go according to the statements given in the question kada, there could be other possibilites as well, but question ki relate chese kada answer cheppali, wat say?