Mrs. abraham, mrs. ratchford, and mrs. mcguire decide to open a bakery.
it requires an investment of $250,000 to start the business. mrs. mcguire
isn't sure about the business and doesn't want to invest as much money
as the other two so she only puts in one part, while mrs. abraham
contributes four parts and mrs. ratchford contributes three parts.
determine how much each person needs to contribute to start the
business.