2020 Math Kangaroo Levels 11-12 Problem #23

2020 Math Kangaroo Levels 11-12 Problem #23 23. The length of one of the sides of a rectangular garden is enlarged by 20% and the length of the other side is enlarged by 50% so that it has become a square garden as shown in the picture. If the shaded area between the two diagonals is 30 𝑚² , what was the area of the original rectangular garden? (A) 60 𝑚² (B) 65 𝑚² (C) 70 𝑚² (D) 75 𝑚² (E) 80 𝑚² Thank you for watching and please subscribe if you would like to see more videos!