1bi. Not so Noble Doctor

Dr Dhakhadji is a doctor who runs his own imaging centre. He became a doctor to serve the people. But as he became older, his own greed became more important than people’s need. So he started unnecessarily using more expensive tests like MRI or CT scans even in cases where only cheap X-rays were needed. Then one day, Karma knocked on Dr Dhakhad’s door and his own son died due to medical negligence in another city. After reaping what he had sowed, the doctor realised his mistake. But as they say, old habits die hard. The doctor was not able to completely destroy the monster of his greed. He could only tame it. So now instead of fooling every patient, he devised a simple formula.

Now, he refers only the first 10% patients for MRI and the last 20% patients for CT Scan in every lot of 10 patients. Can you help the patients reach the correct rooms?