Question
Average weight of all the people in a group is 55 kg.
When two people of weight 63 kg and 77 kg left the group, average weight reduces by 1.5 kg. Find the number of people in the group now.Solution
Let the number of people initially be 'n'.
So, 55n - 53.5 Ă— (n - 2) = 63 + 77
Or, 55n - 53.5n + 107 = 140
Or, 1.5n = 33
Or, 'n' = 22
Required number of people = 22 - 2 = 20
What was the revised windfall tax on petroleum crude announced by the Indian government, effective August 17, 2024?
- Sam Nujoma, who recently passed away, was the first president of which country?
What is the projected remittance inflow to India in 2023, according to the World Bank report?
Where did the Minister of State for Communications, Devusinh Chauhan, inaugurate Hamfest India 2023, and what is its significance?
What is the primary theme of Payal Kapadia’s film “All We Imagine As Light,” named the best film of 2024 by Sight and Sound magazine?
Who has been elected as the new President of Vietnam?
Which method was used to date the cave painting in the Leang Karampuang cave?
India aims to reach net-zero emissions by which year?
UrbanGabru announced who among the following as its Brand Ambassador?
What is the new name of the old Indian Parliament Building?
Relevant for Exams:
