Question 913484
W * L = 60 
H * L = 120  
factors 60 6,10
factors 120 6,2 10
6*10
12*10
common factors
H * L = 120  
H * W = 72 
common factors
factors 120 12, 10
factors 72 12,6
H = 12,   L = 10,   W = 6