4×3=12
12+12=24, 3+3=6
24+6=30
So 12 × 3 = 36 square ft.
Answer:
Step-by-step explanation:
The average of the 75 customers will be 6.4.
<h3>How to calculate the value?</h3>
The first 30 customers made an average of 5 claims each. The total claims will be:
= (5 × 30) = 150
When 75 more people were assessed, the average was 6. Therefore, the total claims will be:
= (75 + 30) × 6
= 105 × 6
= 630
Therefore, the average of the 75 customers will be:
= (630 - 150)/75
= 480/75
= 6.4
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X = total amount of people
80% of x = 540
.8x = 540
x = 675
There were 675 people
