Respuesta :
30 people out of a total of "x" watched for 1 hour
this is 75% of the total group
so 75% of x must equal 30
x*0.75 = 30
divide 0.75 to both sides
x= 30/0.75= 30/3 *4=...
this is 75% of the total group
so 75% of x must equal 30
x*0.75 = 30
divide 0.75 to both sides
x= 30/0.75= 30/3 *4=...