Hi,

I found online a nice (and seemed easy) math problem.

Rocket A travel from Mars to Earth in 200 days
Rocket B travel from Earth to Mars in 150 days, but take off 30 days later

When they cross each other, which one is the closet to the earth ?

So they give a “flat” answer, without giving any explanation on how they reach this conclusion.

What would be your simplest Mathematical solution for this ?

Thanks.

  • Donatello@lemmy.mlOPEnglish
    2·
    2 months ago

    @[email protected] No you were right at first ! the question is

    When they cross each other, which one is the closet to the earth ?

    So indeed when they cross they are the same point in space (more or less otherwise it’s a collision :) ) so if they are at the same point the are at the same distance to Earth… :)