1-An aircraft with 1020hPa set on the altimeter sub-scale departs aerodrome 'A' which is 800ft above mean sea level (AMSL). The flight is made to the planned destination aerodrome 'B' which is in an area of low pressure, but the altimeter sub-scale is not updated en route. If the QNH at aerodrome 'B' is 999hPa, and the highest point on the landing area is 500ft AMSL, what should the altimeter read? Assume 1hPa = 30ft.