Suggestions on errors?

Question

Doesnt work for a couple of tests..not sure where the mistake is
fun main(args: Array<String>) {
var hours = readLine()!!.toDouble()
var total: Double = 0.0
total = when
{
hours in 0.1..5.0 -> 1.0 * hours
hours in 5.1..24.0 -> ((hours-5.0)*0.5)+5.0
else -> 15.0+((hours-24.0)*0.5)
}
println(total)
}

Any help will be greatly appreciated

Answer 1

24 hours = 14.50 in your code should be 15.0
48 hours = 27.0 should be 30.0

Answer 2

that's great. thanks for the help guys.