of the candidates who sat for an international mathematics examination, 18% of the candidates obtained grade A, 38% obtained grade B and the rest obtained grade C. Given that 77 candidates obtained grade C, find the total number of candidates whi sat for the examination.
Jawab:
175
Penjelasan dengan langkah-langkah:
44/100 = 77/X (44/100 or 44% equals to 77 people per X people)
0,44/77 = 1/X (0,44 is 44 divided by 100, then 77 pindah ruas)
77/0,44 = X (ruasnya dibalik agar mendapat nilai X)
175 = X (Hasilnya 175, jadi 44% dari 175 adalah 77)
jadi keseluruhan kandidat yang duduk pada ujian matematika international berjumlah 175
Apologize for Bahasa Inggris yang bad
semoga mendapat sorry