Question

Start with 360. Increase by 15%.
Start with 480. Decrease by 10%.

Answer 1

1. 414
2. 432

Explanation:

Problem 1

Start with 360

⇒ 360

Increase by 15%

⇒ 360 (1 + 15%)

⇒ 360 (1 + 0.15)

⇒ 360 (1.15)

⇒ 414

Problem 2

Start with 480

⇒ 480

Decrease by 10%

⇒ 480 (1 - 10%)

⇒ 480 (1 - 0.1)

⇒ 480 (0.9)

⇒ 432