Data discrepancy.Not getting correct data.Reqs/sec does not match the configuration

[rahtr]

Check out the request which is being made-->
./wrk -t1 -c9 -d3s -R10 --latency http://test.com/sample/hello.jsp

Output-->
---------------------------------------------------------- 30 requests in 3.00s, 16.26KB read Requests/sec: 9.99 Transfer/sec: 5.41KB

As per the documentation, the total request made to the server should be 27?

Also in the below scenario-->
./wrk -t1 -c5 -d2s -R10 --latency http://test.com/sample/hello.jsp

16 requests in 2.03s, 8.67KB read
Requests/sec: 7.89
Transfer/sec: 4.28KB

How does the reqs/sec is >5?