Grade 9 students will be having a field demo. In their performance, they
need 3 sets of costume for their Mascara Festival theme. The sum of each set of
costume is Php 420. In Section A their total cost is Php 3710, 6 students for costume
set A, 6 students for costume B and 13 students for costume C. In section B with 25
students, their total cost is Php 3390, 10 students for costume set A, 8 students for
costume B, and the rest is for costume set C. Find the amount of each set of
costume.
use Cramer’s rule
Answer: Sana makatulong sayo
