1. The increased area of flower bed is obtained by multiplying the increased length of flower bed by the width of flower bed. That is 2.5 times the width = 15, so the width is 6 meters.

The area of the original flower bed is the length times the width of the original flower bed, that is, 10 times 6=60 square meters.

Now the flower bed area is the current length times the width, that is, 12.5 times 6=75 square meters.

2.