Question

A block of metal with volume 14 m3 and density 4,700 kg/m3 is combined with another metal of mass 920 kg and volume 6.2 m3 to form an alloy.
What is the density of the alloy to the nearest integer?

Answer 1

Answer:

3257.425

Step-by-step explanation:

1st mass=V*D=14*4700=65,800 kg

sum of both mass=920+65800=66720kg

sum of volume of both =14+6.2=20.2m^3

Density=Mass/volume=65,800/20.2=3257.425kg/m^3

Answer 2

Note the density of the alloy

= Density of the first alloy +density of the second alloy

= Density of the first alloy= 4700kg/m^3

=Density of the second alloy = 148.387096 (148.4 approx)

=Density of the alloy = 4848.4 kg/m^3 approx

Hope this will help you to clear out the doubt