Answer:
cost to stay for 3 days = 38,880
Explanation:
let x be the cost to stay for 3 days
it costs 90720 to stay for 7 days
it costs x to stay for 3 days
x / 90720 = 3/7
x = 3/7 * 90720
= 272160 / 7 = 38,880
thus, the cost to stay for 3 days = 38,880