Question

10 workers take 5 days at 3 hours per day to repair abroad. How many days for two road workers at 5 hours each day?

Answer 1

Answer:

$\huge\underline\color{skyblue}{Answer ☘}$

$10 \: people \times 3 \: hrs/day = \\ 30 \: man \: hrs/ \: day \\ \\ 2 \: people \times 5 \: hrs/day = \\ 10 \: man \: hrs \: per/day \\ \\ 2 \: people \: work \: 5 \: hrs \: a \: day, \: so \: they \: \\deliver \: 10 \: man \: hours \: a \: day. \\ To \: finish \: a \: work \: of \: 100 \: man \: hours , \\ they’ll \: need \\ \\ \frac{100}{10} = 10 \: days$

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