Hi everyone,
I just found the original question with no ambiguity any more!
Hope this clears things up!
Best,
suby
You are planning to fly across a mountain range. The chart recommends a minimum altitude of 12000 feet above mean sea level. The air mass you will be flying through is an average 10°C warmer than ISA. Your altimeter is set to 1023 hPa (QNH of a nearby airport at nearly sea level). What altitude will the altimeter show when you have reached the recommended minimum altitude?
a) 12210 feet
b) 11520 feet
c) 11250 feet
d) 11790 feet
Answer b) is correct