Question

85. The area of a rectangular field is 144
m². If its length is increased by 5mts, its
area increases by 40 m². The length of
the field is​

Answer 1

Answer:

let the length be x and breath be y

xy=144

when length is increased by 5

(x+5)y = 184

xy+5y=184

5y=184-144

y=8

thus x=18cm

length of the field is 18cm

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