Monday
March 27, 2017

Post a New Question

Posted by on .

There are 10 sailboats in the harbor. Some of the boats have 2 sail & some of boats have 3 sails. If there are 24 sails visible on all of the boats, how many boats have 3 sails & how many boats have 2 sails?

  • Math - ,

    Set it up like this;

    2x + 3y = 24
    x + y = 10 <--use this one to solve for y.

    so y = -x + 10 ...

    Now substitute (-x + 10) for y in the first equation..so
    2x + 3(-x + 10) = 24
    2x + (-3x) + 30 = 24
    -x + 30 = 24
    -x = 24-30 or -6
    x = 6, y = 4

    so 6 have 2 sails and 4 have 3 sails...

Answer This Question

First Name:
School Subject:
Answer:

Related Questions

More Related Questions

Post a New Question