Hi, I'm having a hard time solving this chart, would please help me with this?

thanks!

Report Table MP3: Melting pont analysis Table view List view Midpoint of melting temperature (MP) range for pure compounds and mixtures Start of MP temp range End of MP temp range (C) ("C) Midpoint of MP temp range (C) Pure benzoic acid 121 123 80:20 mixture (benzoic acid:mandelic acid) 95 109 92 99 60:40 mixture (benzoic acid:mandelic acid) 40:60 mixture (benzoic acid mandelic acid) 20:80 mixture (benzoic acid mandelic acid) 89 93 87 90 118 120 Pure mandelic acid