The total cost of a certain length of a piece of cloth is Rs. 200. If the piece was 5mlonger and each metre of cloth costs Rs. 2 less, the cost of the price would have remained unchanged. How long is the piece and what is the original rate per meter
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Let the length be x and rate per metre be y.
xy=200.....(i)
y=200/x
(x+5)(y-2)=200......(ii)
xy-2x+5y-10=200
x(200/x)-2x+5(200/x)-10=200
200-2x+1000/x=210
x2+5x-500=0
a=1
b=5
c=-500
x= -5+45/2
=40/2
=20
x=-5-45/2
=-50/2
= -25
20 x y = 200
y=10
Length of the cloth is 20m and the rate per metre is Rs.10
..............................................................
I have written so long , so pls feel pity on me and mark the answer as brainliest.
xy=200.....(i)
y=200/x
(x+5)(y-2)=200......(ii)
xy-2x+5y-10=200
x(200/x)-2x+5(200/x)-10=200
200-2x+1000/x=210
x2+5x-500=0
a=1
b=5
c=-500
x= -5+45/2
=40/2
=20
x=-5-45/2
=-50/2
= -25
20 x y = 200
y=10
Length of the cloth is 20m and the rate per metre is Rs.10
..............................................................
I have written so long , so pls feel pity on me and mark the answer as brainliest.
nayanu:
Solving maths is also abt quick thinking capacity n time management
Thanks for telling -_- But teacher soenst give marks fir that in exam..She insists for all steps according to the textbook xD
Doesn't* for*
Please can u tell my teacher xD
Oh sorry :P for disturbing
I dont know wt is school is all abt.......bt there r various methods in maths and examiners r liable to corct it it is rytt?,vese bhi yha koi teacher marks chadane nhi baitha.................hope u gert it
get*
Pta hai :P Examiners understand it but many a times they don't give m..Heeeh
Hmm.......
Bt Queen Meghani u pls mark the ans as brainliest........
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