Answer:
$168
Step-by-step explanation:
let x = total sum of money shared
Amount Gerald took = 51 + [tex]\frac{2}{7} x[/tex]
Amount Ben took = (51 + [tex]\frac{2}{7} x[/tex]) - 30
= 21 + [tex]\frac{2}{7} x[/tex]
(51 + [tex]\frac{2}{7} x[/tex]) +( [tex]21 + \frac{2}{7}x[/tex]) = x
combine like terms
51 + 21 = x - ([tex]\frac{2}{7} x + \frac{2}{7} x[/tex])
72 = x - 4/7x
72 = 3/7x
divide both sides of the equation by 7/3
x = $168
