Respuesta :

Razak1

Answer:

they've watched tv for 10 hours last week

Step-by-step explanation:

0.9X = 9

X = 10

mlempitski1
10 hours of tv

This is because the 9 hours is equal to 90% of the total time of the week before, and 9/9 is equal to 1, and 90/9 is equal to ten. You then add the ten precent value and the 90% value to get 10 hours