Chapter 12, Problem 42SGR

To determine

To determine the height of the actual car.

Answer to Problem 42SGR

4.6 feet

Explanation of Solution

Given:

An actual car and a car model.

Scale: 1 inch on model $=$$5\frac{3}{4}$ feet on actual car.

Concept used:

Unitary method

Calculation:

Now, according to the question

  $\Rightarrow$$1$ inch $\to 5\frac{3}{4}$ feet

  $\Rightarrow 1$ inch $\to \frac{23}{4}$ feet

So, if the height of the model car is $\frac{4}{5}$ inches,

The height of the actual car $=\frac{23}{4}\times \frac{4}{5}$ feet

  $\Rightarrow \frac{23}{5}$

  $\Rightarrow 4.6$ feet

Conclusion:

Therefore, height of the actual car is 4.6 feet.