First, let's find the daily wages of a and b based on the given ratio and the daily wage of c.

The ratio of their daily wages is 3:4:5 for a, b, and c, respectively. If c's daily wage is 71.15384615384615, we can set up the following proportion to find the daily wages of a and b:

For a (whose ratio is 3), the daily wage would be:
\( \frac{3}{5} \times 71.15384615384615 \)

For b (whose ratio is 4), the daily wage would be:
\( \frac{4}{5} \times 71.15384615384615 \)

Now, let's calculate these amounts:

Daily wage of a:
\( \frac{3}{5} \times 71.15384615384615 = 42.69230769230769 \)

Daily wage of b:
\( \frac{4}{5} \times 71.15384615384615 = 56.92307692307692 \)

Now that we have the daily wages for a, b, and c, we can calculate their total earnings by multiplying their daily wages by the number of days they worked:

Total earning of a:
\( 42.69230769230769 \times 16 \)

Total earning of b:
\( 56.92307692307692 \times 9 \)

Total earning of c:
\( 71.15384615384615 \times 4 \)

Let's calculate these amounts:

Total earning of a:
\( 42.69230769230769 \times 16 = 683.076923076923 \)

Total earning of b:
\( 56.92307692307692 \times 9 = 512.307692307692 \)

Total earning of c:
\( 71.15384615384615 \times 4 = 284.615384615384 \)

Finally, we add up the total earnings of a, b, and c to get their combined total earning:

Total earning of a + Total earning of b + Total earning of c:
\( 683.076923076923 + 512.307692307692 + 284.615384615384 \)

Total combined earning:
\( 683.076923076923 + 512.307692307692 + 284.615384615384 = 1479.999999999999 \)

Therefore, their total combined earning is approximately $1480.
먼저 주어진 비율과 c의 일일 임금을 기준으로 a와 b의 일일 임금을 구해 봅시다.

a, b, c의 일일 임금 비율은 각각 3:4:5입니다. c의 일일 임금이 71.15384615384615인 경우, 다음과 같은 비율을 설정하여 a와 b의 일일 임금을 구할 수 있습니다:

비율 3인 a의 경우 일일 임금은 다음과 같습니다:
\(\frac{3}{5} \times 71.15384615384615 \)

비율 4인 b의 경우 일일 임금은 다음과 같습니다:
\(\frac{4}{5} \times 71.15384615384615 \)

이제 이 금액을 계산해 보겠습니다:

a의 일일 임금:
\(\frac{3}{5} \times 71.15384615384615 = 42.69230769230769 \)

b의 일일 임금:
\(\frac{4}{5} \times 71.15384615384615 = 56.92307692307692 \)

이제 a, b, c의 일일 임금을 알았으므로 일일 임금에 근무 일수를 곱하여 총 수입을 계산할 수 있습니다:

a의 총 수입:
\( 42.69230769230769 \times 16 \)

b의 총 수입:
\( 56.92307692307692 \times 9 \)

c의 총 수입:
\( 71.15384615384615 \times 4 \)

이 금액을 계산해 보겠습니다:

a의 총 수입:
\( 42.69230769230769 \times 16 = 683.076923076923 \)

b의 총 수입:
\( 56.92307692307692 \times 9 = 512.307692307692 \)

c의 총 수입:
\( 71.15384615384615 \times 4 = 284.615384615384 \)

마지막으로 a, b, c의 총 수입을 더하여 총 수입을 구합니다:

a의 총 수입 + b의 총 수입 + c의 총 수입:
\( 683.076923076923 + 512.307692307692 + 284.615384615384 = 1479.999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999