6.41 Applying a function using 2 arguments from a list

Remove[a, b, c, d, e, f] 
Apply[#1 + 3*#2 & , {{a, b}, {c, d}, {e, f}}, 1] 
 
Out[183]= {a + 3*b, c + 3*d, e + 3*f}
 

Or

Apply[#1 + 3*#2 & , {{a, b}, {c, d}, {e, f}}, {1}] 
 
Out[184]= {a + 3*b, c + 3*d, e + 3*f}