The equation for Carla's weight on Mars looks like this:
[tex]w = 78 \times \frac{38}{100} [/tex]
because out of 100% of her weight on earth (78 lb), she will only weigh 38% of it on Mars.
Now, solve the equation to find her weight:
[tex]w = 78 \times \frac{38}{100} \\ = \frac{2964}{100} \\ = 29.64[/tex]
So, Carla's weight on Mars is 29.64 pounds.
