Question
The average age of a group of 80 students is 14 years.
If 3 students whose ages are 16 years, 22 years, and _____ years are replaced by 3 new students whose ages are _____ years, 20 years, and 32 years, then the new average age of the group increases by 0.25 years. The values given in which of the following options will fill the blanks in the same order to make the above statement true: I. 28, 39 II. 35, 46 III. 23, 34Solution
ATQ, Since the new average increases by 0.25 years, the difference in the sum of ages of the students who left and the new students should be: 80×0.25=20 years Option I: (39+20+32)−(16+22+28)=25 years So, option I cannot be the answer. Option II: (46+20+32)−(16+22+35)=25 years So, option II cannot be the answer. Option III: (34+20+32)−(16+22+23)=25 years So, option III cannot be the answer.
Which is the largest continental shelf in the world?
Cabinet has approved the continuation of PM SVANidhi beyond March 2022 till December 2024, what was the budget allocated for this scheme?
Which of the following statements regarding the attendance of retired judges at sittings of the Supreme Court of India is/are correct?
1. Arti...
According to average rainfall in India, the Ladakh Union Territory is located in ___________.
Who has been appointed as the MD & CEO of HDFC Bank for a period of three more years?
The synthesis of which chemical is inhibited due to aspirin?
Consider the following initiatives taken to improve female labour work participation rate in the recent past.
1. Women Helpline Scheme (WHL) h...
What differentiates intermediate goods from final goods?
The Ways and Means Advances (WMA) limit set by the RBI for the central government in the first half of the fiscal year 2024-25 is:
According to Census of India 2011, which of the following states recorded the least population?
