Regd Merging These 2 MySql Queries into 1

[Paaro]

I have following two SQL queries to execute in mySQL.

SELECT total(amount) as total_receipts FROM receipts WHERE torderid = 101
SELECT total(amount) as total_refunds FROM refunds WHERE torderid = 101

I get following below values using these two above queries

total_receipts
total_refunds

Now I need to calculate net_receipts as below.

net_receipts = total_receipts - total_refunds


Is there way to get total_receipts, total_refunds and net_receipts by merging the above two queries into a single SQL query?

Please help.