Question

50 testers can complete 25 test cases in 10 days. All testers are
equally productive. A project has 25 testers and 50 test cases
How much time will they take to complete?

Answer 1

Resposta:

Time: 40 days

Explicação passo-a-passo:

More testers => less time: inverse proportion;

More tests cases => more time: direct prop.

If d=days, t=testers, c=test cases, we have:

$\frac{d1}{d2} = \frac{c1}{c2} \times \frac{t2}{t1} \\ \frac{10}{x} = \frac{25}{50} \times \frac{25}{50} \\ x = \frac{10 \times 50 \times 50}{25 \times 25} \\ x = 10 \times 2 \times 2 \\ x = 40 \: days$