Is it possible to combine these 2 linq queries?

Is it possible to combine these 2 linq queries?

I'm using entity framework to return my data.
I have 2 almost identical methods/queries. The only difference is that one
has an additional Where statement.
The first query gets the average value of accepted transactions, and the
second query gets the average of all transactions.
Here are the 2 methods:
static IEnumerable<BuyerEarning> GetBuyerEPA()
{
var collectTo = DateTime.Now.AddDays(-1).DayEnd();
var collectFrom = collectTo.AddDays(-29).DayStart();
using (var uow = new UnitOfWork(ConnectionString.PaydayLenders))
{
var r = new Repository<MatchHistory>(uow.Context);
return r.Find()
.Where(x =>
x.ResultTypeId == (int)MatchResultType.Accepted &&
x.CreatedOn <= collectTo &&
x.CreatedOn >= collectFrom)
.GroupBy(x => new
{
x.BuyerId,
x.TreeId,
x.TierId
})
.ToList()
.Select(x => new BuyerEarning(
x.Key.BuyerId,
x.Key.TreeId,
x.Key.TierId,
x.Average(y => y.Commission)))
.ToList();
}
}
static IEnumerable<BuyerEarning> GetBuyerEPL()
{
var collectTo = DateTime.Now.AddDays(-1).DayEnd();
var collectFrom = collectTo.AddDays(-29).DayStart();
using (var uow = new UnitOfWork(ConnectionString.PaydayLenders))
{
var r = new Repository<MatchHistory>(uow.Context);
return r.Find()
.Where(x =>
x.CreatedOn <= collectTo &&
x.CreatedOn >= collectFrom)
.GroupBy(x => new
{
x.BuyerId,
x.TreeId,
x.TierId
})
.ToList()
.Select(x => new BuyerEarning(
x.Key.BuyerId,
x.Key.TreeId,
x.Key.TierId,
x.Average(y => y.Commission)))
.ToList();
}
}
Rather than have 2 distinct queries I'd like to use 1 that returns
BuyerId, TreeId, TierId, EpaValue, EplValue. Is this possible and if so,
how?