Question

A power unit is there by the bank of the river of 900 mtr width. a cable is made from power unit to power a plant opposite to
that of the river and 3000 mtr away from the power unit. The cost of the cable bellows water Rs 5/mtr and cost of cable on
the bank is Rs 4/mtr. Find the pt where the cable cut through the river​

Answer 1

Answer:

=2100×4+900×5

=8400+4500

=12900

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Answer 2

Answer:

The point where the cable cut through the river is ​2100

Explanation:

     Width of a power unit is there by the bank of the river of $900 mtr$

     A cable is made from power unit to power a plant opposite to

that of the river and $3000 mtr$ away from the power unit.

The cost of the cable bellows water $Rs 5/mtr$

cost of cable on the bank is $Rs 4/mtr$

  The point where the cable cut through the river is

 The point downstream where the cable is to cut across the river$= 3000-900=2100$

so the answer is 2100.

if cost is to be calculated then

$=2100*4+900*5\\=8400+4500\\=12900$