Question

2. Use the total time traveled column to write an equation.

3. Solve the equation for x. Show work, please.
4. What was the speed of the wind

Answer 1

• 6 mph

Explanation:

Refer to attached table for inputs

Below equation is for total time traveled (middle column of table). Solving for x:

• 20/(14 + x) + 20/(14 - x) = 3.5
• 20(14 - x) + 20(14 + x) = 3.5(14 + x)(14 - x)
• 20*2*14 = 3.5(14² - x²)
• 160 = 196 - x²
• x² = 36
• x = √36
• x = 6

Speed of wind is 6 miles per hour