how do i solve, If 160lb of an alloy contains 76.8lb of copper, what peercent of the alloy is copper?

Question

lexy148 · Answer

can you explain how you got that answer

hero · Answer

@cj49, giving direct answers on OS is forbidden. Guiding, explaining, demonstrating, and tutoring is welcome here.

cj49 · Answer

76.81/160x100=48

cj49 · Answer

ill be more careful from next time@Hero

hero · Answer

You can use this equation for problems like these:

$$\frac{\text{part}}{\text{whole}} = \frac{\%}{100}$$

Then input the given values. In this case $\%$ is $x$ since it is unknown:

$$\frac{76.8}{160} = \frac{x}{100}$$

lexy148 · Answer

oh okay thank you i get it  now  @Hero

hero · Answer

You're welcome