Because milk tea is flourishing in their town, Mathilda decided to sell Wintermelon milk tea (WMT)
powder at Php 1 per gram and Okinawa milk tea (OMT) powder at Php 2 per gram. To increase her
profit, she plans to mix the two milk tea powders. How much OMT should she mix with 300 grams
of WMT so that she can sell the resulting mixture at Php 1.80 per gram?