Respuesta :
Lunch: 0.5 Changing rooms: 0.7
7.75 - 1.2 = 6.55
6.55 / 6 = 1.09 hours/class
7.75 - 1.2 = 6.55
6.55 / 6 = 1.09 hours/class
7 3/5 = 38/7 hours
1/2 hour
7/10 hour
convert them so they all have the same denominators
38/7 = 380/70
1/2 = 35/70
7/10 = 49/70
add 35/70 and 49/70 then subtract from 380/70
35/70 + 49/70 = 84/70
380/70 - 84/70 = 296/70
296/70 divided into 6 classes
296/70 divide 6 = 296/70 x 1/6
= 74/105 x 60 mins
= 42.28571429
each class is approximately 42 mins long
1/2 hour
7/10 hour
convert them so they all have the same denominators
38/7 = 380/70
1/2 = 35/70
7/10 = 49/70
add 35/70 and 49/70 then subtract from 380/70
35/70 + 49/70 = 84/70
380/70 - 84/70 = 296/70
296/70 divided into 6 classes
296/70 divide 6 = 296/70 x 1/6
= 74/105 x 60 mins
= 42.28571429
each class is approximately 42 mins long