Question 639761
Ratios are 4:3:1

Let the common factor be x

so tim gets 4x
Jess 3x
Emily x

4x+3x+x= 4200

8x=4200
/8
x= 525

4x= 4* 525 = 2100 - Tim
3x=3*575=1725-Jess
x= 525- emily