Question

a personal Mars waste 38% of their weight on Earth. if Carla weighs 78 pounds on Earth how much she would she weigh on Mars to the nearest pound

Answer 1

The equation for Carla's weight on Mars looks like this:
$w = 78 \times \frac{38}{100}$
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:
$w = 78 \times \frac{38}{100} \\ = \frac{2964}{100} \\ = 29.64$

So, Carla's weight on Mars is 29.64 pounds.