Question

Mandy works construction. Shes knows that a 5 meter long metal bar has a mass of 40 kg.Mandy wants to figure out the mass (w) of a bar made out of the same metal that is 3 meters long and the same thickness.

Answer 1

Answer:

24 kg

Step-by-step explanation:

40/5 = 8 and 3x8 = 24

Answer 2

Answer:

24 kg

Step-by-step explanation:

$\frac{5}{40} =\frac{3}{w} \\5w=120\\w=\frac{120}{5}=24$