Réponse :
24 workers can complete the same work in 30 hours.
Explications étape par étape
t is given that the 15 workers can build a wall in 48 hours.
Let x workers can complete the same work in 30 hours.
15 * 48 = 30 * x
divide both side by 30
15 * 48
--------- = x
30
24 = x