Combine 2 Queries (from SAME table) into a SINGLE query

I have this two queries (from SAME table), and want to combine into one SINGLE query, how?

How can we use CASE WHEN THEN for such situation? 

Query1:

SELECT t_inner.*,
Floor(t_inner.ProductiveTime/ 3600) || 'hr:' || LPAD(Floor(Mod(t_inner.ProductiveTime,3600) / 60),2,0) || 'min:' AS Productive_Time,
Floor(t_inner.OperatorDownTime/ 3600) || 'hr:' || LPAD(Floor(Mod(t_inner.OperatorDownTime,3600) / 60),2,0) || 'min:' AS OperatorDown_Time
FROM
(SELECT SYSTEMTYPE,
sum(TIME_TEST + TIME_STEP) AS ProductiveTime,
sum(TIME_IDLE) AS OperatorDownTime
FROM PFODS.PPL_TESTSYSTEMS_UTILISATION
WHERE        (SYSTEMTYPE = '0005-072') 
			  AND (TS_START >= to_date('13/01/2014', 'DD/MM/YYYY')) 
          	  AND TS_End <= to_date('17/01/2014', 'DD/MM/YYYY') +  1 + (1/1440) +(59/86400)
			  AND MONO != '9999999999'
GROUP BY SYSTEMTYPE ) t_inner

Query 2:

SELECT t_inner.*,
Floor(t_inner.MachineDownTime/ 3600) || 'hr ' || LPAD(Floor(Mod(t_inner.MachineDownTime,3600) / 60),2,0) || 'min' AS MachineDown_Time
FROM
(SELECT SYSTEMTYPE,
sum(TIME_IDLE) AS MachineDownTime
FROM PFODS.PPL_TESTSYSTEMS_UTILISATION
WHERE        (SYSTEMTYPE = '0005-072') 
			  AND (TS_START >= to_date('13/01/2014', 'DD/MM/YYYY')) 
          	  AND TS_End <= to_date('17/01/2014', 'DD/MM/YYYY') +  1 + (1/1440) +(59/86400)
			  AND MONO = '9999999999'
GROUP BY SYSTEMTYPE) t_inner

see http://postimg.org/image/koq87iyyz/  andhttp://postimg.org/image/fv3zxa38n