Question

53. Five men or 8 boys can do a job in 10 days. How
many days will 4 men and 4 boys take to complete
the same job?
Show steps plz

Answer 1

Answer:

20days

Step-by-step explanation:

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Answer 2

Answer:

$7\frac{9}{13}$ days

Step-by-step explanation:

5 men = 10 days to complete the job.

Work done on 1 day by 1 man is 1/50 part

8 boys = 10 days to complete the job.

Work done in 1 day by 1 boy is 1/80 part

If 4 men and 4 boys work on 1 day is 4 × 1/50 + 4 × 1/80 part

$\frac{4}{50}$ + $\frac{4}{80}$ = $\frac{2}{25}$ + $\frac{1}{20}$ = $\frac{8+5}{100}$ = $\frac{13}{100}$

It takes $\frac{100}{13}$ = 7 and $\frac{9}{13}$ days to complete a job. ( $7\frac{9}{13}$ days )