Question

the length of a rectangular field is 10m more than its breadth. the cost of fencing the field at a rate of ₹30 per metre is equal to 105 times the length of the field. find the length and breadth of the field
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Answer 1

Answer:

length= 30+10=40m

breadth=30m

Step-by-step explanation:

breadth = x

length    = x+10

perimeter of a rectangle = 2(l+b)

                                         = 2(x+x+10)

                                         = 2x+2x+20 = 4x+20

ACCORDING TO QUESTION

                          30 X (4x+20)=105(x+10)

                               120x+600=105x+1050

                               120x-105x=1050-600

                                          15x=450

                                              x=450/15

                                               x=30m

length= 30+10=40m

breadth=30m