Respuesta :
Total duration: 20 mins
8.05 am , count back 5 mins = 8 am
20 mins - 5 mins = 15 mins
8 am, count back 15 mins = 7.45am
He needs to leave the house at 7.45am
8.05 am , count back 5 mins = 8 am
20 mins - 5 mins = 15 mins
8 am, count back 15 mins = 7.45am
He needs to leave the house at 7.45am
