Answer:
540 seconds
Step-by-step explanation:
- 15 min = 900 seconds
- Plug 900 in: Blinked 85 times in 900 seconds
- Set up a proportion: [tex]\frac{85}{900} = \frac{51}{x}[/tex]
- Cross multiply, then divide: 900 × 51 = 45900, 45900 ÷ 85 = 540 seconds
I hope this helps!
