Question

Jackie planted an orchid that was 3 inches tall. The plant grew by 250% of its height after 5 weeks. How tall was the plant after 5 weeks?

Answer 1

10.5 inches

Explanation:

250% = 250/100 = 2.5

The plant grew 2.5 times its height in 5 weeks.

Be careful with the way you interpret "The plant grew by 250% of its height after 5 weeks." It means that in 5 weeks, the plant grew an amount equal to 2.5 times the original length of the plant. It does not mean that the total height at the end of 5 weeks was 2.5 times the original height.

growth is 5 weeks: 250% of 3 inches = 2.5 × 3 inches = 7.5 inches

height after 5 weeks: 3 inches + 7.5 inches = 10.5 inches