Answers

2015-10-31T13:43:57+05:30

This Is a Certified Answer

×
Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
Let the length of the cable = L meters
the cost of the cable =  200 / L  Rs/meter

given  ( L + 3) * (200/L  -  2) = Rs 200
           200 - 2 L + 600/L - 6 = 200
simplifying
           L² + 3 L - 300 = 0

           L =  [-3 +- √1209] /2 =  15.885  meters
           cost of the cable = 12.59 Rs/m
 =============
in terms of the cost of the cable:

Let the cost of the cable be :  C  Rs/m
So length of the given cable:    200 / C

given:    (200 / C + 3) (C - 2) = 200
             200 - 400 / C  + 3 C - 6 = 200
             3 C² - 6 C - 400 = 0


1 5 1
2015-10-31T15:10:59+05:30
Let the length of the cable = x meters
the cost of the cable =  200 / x  Rs/meter

given  ( x + 3) * (200/x  -  2) = Rs 200
           200 - 2 x + 600/x - 6 = 200
by simplifying
           x² + 3 L - 300 = 0 
           x =  [-3 +- √1209] /2 =  15.885  meters
           cost of the cable = 12.59 Rs/m
in terms of the cost of the cable:

Let the cost of the cable be :  C  Rs/m
So length of the given cable:    200 / C

given:    (200 / C + 3) (C - 2) = 200
             200 - 400 / C  + 3 C - 6 = 200
             3 C² - 6 C - 400 = 0
0