Question

Ariel weighed an object on her balance and recorded a mass of 24.3 grams. Her teacher told her that there was obviously something wrong with her balance because it was giving her a reading which was 30.0% too high. What was the actual mass of the object?

Answer 1

`100\% - 30\% = 70\%`

`24.3 * 70\% \\ = 24.3 * (70)/(100) \\ = 17.01`
The actual mass was 17.01 grams.

Hope this helps. - M