Question
The average height of each person in group 'K' having 22
people is 14 cm less than the average height of each person in group 'L' having 18 people. If the sum of the heights of all people in group 'K' is the same as that in group 'L', then what is the average height of a person in group 'L'?Solution
ATQ, Let the average height of a person in group 'L' = 'c' cm. Then, the average height of a person in group 'K' = (c - 14) cm. Total height of all people in group 'L' = 18 × c = '18c' cm. Total height of all people in group 'K' = 22 × (c - 14) = 22c - 308 cm. So, 22c - 308 = 18c. Or, 4c = 308. So, c = 308 / 4 = 77. Required average height = 77 cm.
Which of the following statements best describes the outcome of the 10th India-South Korea Joint Commission Meeting (JCM)?
What is the primary benefit of the property card issued under the SVAMITVA scheme?
Which airline became the first Indian airline to transport over 100 million passengers in a calendar year?
Under AI Pragya, how many youth are to be trained in AI, ML, and data technologies?
Who won the gold medal at the Asian Marathon Championships 2024?
What is the estimated cost of the 'Nijut Moina' scheme announced by Assam's Chief Minister over five years?
Recently external Affairs Minister S Jaishankar and Defence Minister Rajnath Singh held the second India - Japan 2 + 2 Foreign and Defence Ministerial M...
According to the SRS 2021 report, which Indian state had the highest Total Fertility Rate (TFR)?
SEBI recently extended the deadline to May 1, ______ for implementation of swing pricing mechanism, for mutual fund schemes, aimed at discouraging large...
What is the purpose of the Automated Permanent Academic Account Registry (APAAR) introduced by the central government for school children?
Relevant for Exams:
