Final answer:
To find the scale width, convert the actual width of 7.68 meters to centimeters, then divide by the scale factor of 48. The width of the garage on the scale drawing is 16 cm.
Step-by-step explanation:
To find the width of that garage on the scale drawing of a house which is 1cm: 48cm, first, convert the actual width from meters to centimeters. Since 1 meter is equal to 100 centimeters, multiply the width of the new garage, 7.68 meters, by 100 to get 768 centimeters.
Next, use the scale factor to calculate the width on the drawing. Setting up the proportion, since 1 cm on the drawing represents 48 cm in reality, divide the actual width in centimeters by the scale factor (768 cm divided by 48). This equals 16 cm.
Therefore, the width of the garage on the scale drawing would be 16 cm, making Option 4 the correct answer.