The correct option is B 4,500 km
According to the question, the total distance travelled on the map is 9 cm (4 cm north and 5 cm east).
Therefore, the equation formed using direct proportion from map and actual distance can be given as:
15,00,00,000=9x
x=45,00,00,000 cm
We know that,
1m = 100 cm
1km = 1000 m = 1000 x 100 cm = 100000 cm
⇒x=45,00,00,000 cm=4,500 km
Thus, the total distance covered is 4,500 km.