Question
In a class of 55 students, the ratio of boys to girls is
5:6. The average weight of a boy exceeds the average weight of a girl by 8 kg. Additionally, the ratio of the total weight of all the boys to that of all the girls is 15:14. Determine the average weight of a boy in the class.Solution
Number of boys in the class = 55 X (5/11) = 25 Number of girls in the class = 55 - 25 = 30 Let the average weight of a girl in the class = 'y' kg Then, average weight of a boy in the class = (y + 8) kg Total weight of all girls in the class = 30 X y = '30y' kg Total weight of all boys in the class = 25 X (y + 8) = (25y + 200) kg According to the question, (25y + 200):(30y) = 15:14 Or, 350y + 2800 = 450y So, y = 2800 ÷ 100 = 28 Therefore, average weight of a boy in the class = 28 + 8 = 36 kg
India's first Videsh Bhavan will be established in which of the following states?
Which of the following States is not covered under Strengthening Teaching-Learning and Results for States (STARS) Project?
The all-India poverty ratio was found to be ______ as per the Multidimensional Poverty Index (MPI) 2021.
During which of the following Mughal Emperor's rule, the number of Hindus employee by the Emperor's Administration was the highest?
The narrow zone of contact between the lithosphere, hydrosphere and atmosphere where natural vegetation and wildlife exist is called the:
Which of the following agreements led Mahatma Gandhi to attend the Second Round Table Conference?
Where is the headquarter of ASEAN ?
Which organization is responsible for issuing Sovereign Green Bonds in India?
What historical events are associated with King Ratan Chand of the Chand Dynasty?
I) Brought the capital from Champawat to Almora
II) Star...
Select the option that is related to the third number in the same way as the second number is related to the first number.
25:16::41:?
Relevant for Exams:
