QUESTION 3 Hafiz, Khairum, and Iskandar are three best friends who stay at Melaka and recently traveled to three cities in the Northern Region of Peninsular Malaysia, which is Kangar, Alor Setar, and George Town. The price of lodging in each city is RM160, RM200, and RM230 per night, respectively. However, they got a 10% discount per night for accommodation in Alor Setar, and their total hotel bills for three cities came to RM2660. They spent RM90, RM110, and RM120 per day for their meals in Kangar, Alor Setar, and George Town, respectively, and their total expenses for meals is RM1520. If they spent in Alor Setar as many days they did in Kangar and George Town combined, find how many days they stayed in each city by using the Gaussian elimination method.