If the length of a rectangle is increased by 60%, by what percentage must the width be reduced to keep the area unchanged?

Explanation

When the length is increased by 60%, the new length is 1.6 times the original. To maintain the same area, the width must be adjusted so that (new length) × (new width) = original area. Therefore, new width = original width ÷ 1.6, which means the width must decrease by 37.5%.