The number of students in 3 classes is in the ratio 3 : 4 : 5. If 10 students are increased in each class this ratio changes to 4 : 5 : 6. The total number of students in the three classes in the beginning was

• ক 100
• খ 135
• গ 120 ✅ সঠিক উত্তর
• ঘ 110