Question

If it takes 4 people 20hours to decorate 200biscuits, how long wouldit take 5 people?​

Answer 1

it would take 5 people 16 hours do decorate 200 biscuits

Answer 2

Answer:

$\frac{4}{20} = \frac{5}{x} \\ 4 \times 20 = k \\ 5 \times x = k \\ 4 \times 20 = 5x \\ 80 = 5x \\ \frac{80}{5} = \frac{5x}{5} \\ x = 16$

it get 16 hours.