# The rectangle is 2.4m wide and 35dm long. The width of this rectangle was increased by 25%

**The rectangle is 2.4m wide and 35dm long. The width of this rectangle was increased by 25% and the length was decreased by 20cm. How many square meters the area of this rectangle has decreased or increased.**

1. Determine the width of the rectangle after the change. Since it was increased by 25%, it means that now it is 100 + 25 = 125%. We take the width as a and make up the proportion:

2.4 m – 100%, a – 125%;

2.4: a = 100: 125;

a = (2.4 x 125): 100;

a = 3m.

2. Determine the length of the rectangle after the change (we calculate in meters):

3.5 – 0.2 = 3.3 m;

3. Determine the initial area of the rectangle (we calculate in meters):

2.4 X 3.5 = 8.4 m²;

4. Determine the area of the rectangle after the change:

3 x 3.3 = 9.9 m²;

5. Determine how much the area of the rectangle has increased:

9.9 – 8.4 = 1.5 m².

Answer: the area of the rectangle has increased by 1.5 m².