Question
Average weight of each student, in a class of 70
students, is 86kg. If the ratio of number of boys and girls in the class is 4:3, respectively and average weight of each boy in the class is 92kg, then find the average weight of each girl in the class.Solution
Number of boys in the class = 70 × (4/7) = 40 Number of girls in the class = 70 × (3/7) = 30 Let the weight of each girl in the class be ‘x’ kg. {(40 × 92) + (30 × x)} ÷ {30 + 40} = 86 Or, 3680 + 30x = 6020 Or, 30x = 2340 So, x = 78 Therefore, average weight of each girl in the class = 78kg
Which anniversary of the Central Industrial Security Force (CISF) was celebrated in India in 2024?
The ‘Bio-RIDE’ scheme, approved by the Union Cabinet, focuses on cutting-edge research in Biotechnology. Which of the following is NOT a component o...
What is the minimum age at which an individual can start contributing to the Atal Pension Yojana?
Pandit Shiv Kumar Sharma is renowned for playing which musical instrument?
Which of the following regarding bitcoin is False
On which date is World Lung Cancer Day commemorated annually?
Which Indian state boasts the longest coastline?
_________ state has become the first one to establish the Gati Shakti University in the state?
Coco Islands belong to which of the following nations?
Which city hosted the World Telecommunication Standardization Assembly (WTSA) 2024 for the first time in India and the Asia-Pacific?