Answer:
$62.85
Explanation:
Given data
ratio= 10: 7: 5
Total ratio= 10+7+5= 22
Lisa= $20
Her proportion of the ratio = 7
Applying the part to all method
Let the total amount shared be x
7/22= 20/x
cross multiply
7x= 22*20
7x= 440
divide both sides by 7
x= 440/7
x= 62.85