Question

the area of a rectangular park is 100m if the length is 15 timea the breadth

Answer 1

Let the breadth be y.

Length = y + 15.

Find y:

y (15 + y) = 100

y² + 15y - 100 = 0

(y - 5) (y + 20) = 0

y = 5 or y = -20 (rejected, length cannot be negative)

Find breadth and length:

breadth = y = 5m

length = y + 15 = 5 + 15 = 20m

Find Perimeter:

Perimeter = 5 + 20 + 5 + 20 = 50m

Find cost:

1 m = Rs 5

50m = 50 x 5 = Rs 250

Answer: Rs 250

Answer 2

the answer for your question 250