Question
The number of students in class 'A' is 90, and the ratio
of girls to boys is 3:2. If the average number of boys in classes A and B is 120, and the average number of girls is 132, find the total number of students in class B.Solution
Number of girls in class A = (3/5) × 90 = 54
Number of boys in class A = (2/5) × 90 = 36
Number of boys in class B = 120 × 2 - 36 = 240 - 36 = 204
Number of girls in class B = 132 × 2 - 54 = 264 - 54 = 210
Total number of students in class B = 204 + 210 = 414
Which state in India became the first to set up a life-sized animatronic elephant named Ellie for animal welfare education?
Which two countries signed an agreement on Rail Transport, Customs, and Investments in October 2024?
How much percent growth has Global Rating Agency Moody's projected in India's GDP for FY 2025?
- Who founded the weekly newspaper 'Mooknayak' in 1920?
What is the currency of Brazil?
Which river was declared a "National River of India" in 2024?
- Where did the 1984 Union Carbide gas leak disaster occur?
- In which state is the Neermahal Water Festival annually celebrated?
Which is the largest freshwater lake in India?
Who was the founder of Tasvir Khana?
Relevant for Exams:
