Question

the ratio of the weight of an object on Planet A to the weight of the same object on planet B is 100 to 3. If an elephant weighs 2900 pounds on Planet A, find the elephants wight on planet B.

Answer 1

You can set up a ratio:

`(object weight on A)/(object weight on B) = (elephant weight on A)/(elephant weight on B)`
By substituting in the numbers, you get:

`(100)/(3) = (2900)/(x)`

`((100)/(3)) * x = ((2900)/(x)) * x`

`(100x)/(3) = 2900 \\ ((100x)/(3)) * 3 = 2900 * 3`
100x = 8700
100x / 100 = 8700 / 100
x = 87 pounds

Hope this helps! :)