Question

there is a rectangular Garden whose Length and width is 66 M, 2016 there is a bouquet of uniform width around garden area of walkways 560 m square if the length of the day is 60 M then the width of the book where is

Answer 1

let the width of rectangle be x 
so the length & breath is increased by 2x(draw on a paper
then only u'll understand)
so new total area along with walkway is (60+2x)*(20+2x)
so (60+2x)*(20+2x)-60*20=516
=>(60+2x)*(20+2x)=1716
=>(30+x)*(10+x)=429=33*13
=>x=3
which is the width of gateway