Jayant is raising money for the homeless, and discovers each church group ...

Jayant is raising money for the homeless, and discovers each church group requires 2 hr of letter writing and 1 hr of follow-up calls, while each labor union needs 2 hr of letter writing and 3 hr of follow-up. She can raise $150 from each church group and $200 from each union. she has a maximum of 20 hours of letter writing and 16 hours of follow-up available each month. Determine the most profitable mixture of groups she should contact and the most money she can raise in a month. She should contact _ church group(s) and _ labor union(s), to obtain $_ in donations.