The Answer Is 4.35. Hope This Helps.
the answer is 120 bc 140 is adjacent to it and 140-20 = 120
Let B = age on Ben
and age of Ishaan =I
B =4I
B = 6+I
Gives 6+I = 4I
6 = 3I
I =2 years and B = 4x2 = 8years
Age of Ishaan = 2 years
$56.25
8:25 - 4:25 = 4 hours
4 hours - 1 hour for lunch = 3 hours
$18.75 x 3 = $56.25