Question

Washing his dad's car alone, Bradley takes 6.5 hours. If his dad helps him, then it takes 3 hours. How long does it take Bradley's dad to wash the car by himself?

Answer 1

Bradley's dad takes approximately 1.17 hours to wash the car by himself.

Step-by-step explanation:

Let's assume that Bradley's dad takes x hours to wash the car by himself.

If Bradley takes 6.5 hours to wash the car alone and 3 hours when his dad helps him, we can set up the equation: 6.5 - 3 = 3x.

Simplifying the equation, we get 3.5 = 3x.

Dividing both sides by 3, we find that x = 3.5/3 = 1.17 hours.

Therefore, it takes Bradley's dad approximately 1.17 hours to wash the car by himself.