Question

Can you help me with number 14 please

Answer 1

Let the regular price be p.  Then the new price, after a 35% markdown, is 0.65p.

Mult. $3.29 by 0.65,  Result:  $2.14.  No match here.
 Mult. $4.19 by 0.65.  Result:  $2.72.  We've got a match here!
Mult. $2.79 by .65.  Result:  $1.81.  No match here.
Mult. $3.09 by .65.  Result:  $2.01.  Match!
 
And so on.