Answer:
Bill ran 3 miles on Sunday
Explanation:
the equation needed to solve this question would look something like this, with x representing the miles Bill ran on Sunday -
24= (x) + (x+4) + 2(x+4)
simplified -
24 = 4x +12
24-12 = 12
12 = 4x
3 = x
Bill on Sunday ran 3 miles
Bill on sunday ran (3+4) 7 miles
Julia on Sunday ran 0 miles
Julia on Sunday ran (7x2) 14 miles
3+7+0+14 = 24