Question

which car do you think would mr. chua consider?
mr. chua wants to buy a new car. he has the following criteria to help him decide what brand to buy.

• external look 10%
• vehicle dependability 40%
• fuel economy 20%
• ultimate comfort 30%

the table shows the ratings he gave to the different brands of cars.

brands	external look	vehicle dependability	fuel economy	ultimate comfort
syondae	6	10	8	4
khadillak	4	7	3	9
horhd	7	6	9	3

options:

• syondae
• foyota
• horhd
• khadillak

Explanation:

To determine which car Mr. Chua would consider, we calculate the weighted score for each brand using the given criteria and their weights. The formula for the weighted score of a brand is:
Weighted Score = (External Look × 0.10) + (Vehicle Dependability × 0.40) + (Fuel Economy × 0.20) + (Ultimate Comfort × 0.30)

Step 1: Calculate for Foyota

External Look: \( 5 \times 0.10 = 0.5 \)
Vehicle Dependability: \( 9 \times 0.40 = 3.6 \)
Fuel Economy: \( 7 \times 0.20 = 1.4 \)
Ultimate Comfort: \( 6 \times 0.30 = 1.8 \)
Total: \( 0.5 + 3.6 + 1.4 + 1.8 = 7.3 \)

Step 2: Calculate for Syondae

External Look: \( 6 \times 0.10 = 0.6 \)
Vehicle Dependability: \( 10 \times 0.40 = 4.0 \)
Fuel Economy: \( 8 \times 0.20 = 1.6 \)
Ultimate Comfort: \( 4 \times 0.30 = 1.2 \)
Total: \( 0.6 + 4.0 + 1.6 + 1.2 = 7.4 \)

Step 3: Calculate for Khadillak

External Look: \( 4 \times 0.10 = 0.4 \)
Vehicle Dependability: \( 7 \times 0.40 = 2.8 \)
Fuel Economy: \( 3 \times 0.20 = 0.6 \)
Ultimate Comfort: \( 9 \times 0.30 = 2.7 \)
Total: \( 0.4 + 2.8 + 0.6 + 2.7 = 6.5 \)

Step 4: Calculate for Horhd

External Look: \( 7 \times 0.10 = 0.7 \)
Vehicle Dependability: \( 6 \times 0.40 = 2.4 \)
Fuel Economy: \( 9 \times 0.20 = 1.8 \)
Ultimate Comfort: \( 3 \times 0.30 = 0.9 \)
Total: \( 0.7 + 2.4 + 1.8 + 0.9 = 5.8 \)

Answer:

Syondae has the highest weighted score (7.4) among the options. Thus, Mr. Chua would consider Syondae.
\boxed{Syondae} (Note: In the original options, the correct label is "Syondae" as per the problem's choices.)