Challenger App

No.1 PSC Learning App

1M+ Downloads
The average weight of 50 people is 40 kg. If one person leaves the group and the average decreases by one, what is the weight of the person who left?

A79 kg

B59 kg

C49 kg

D89 kg

Answer:

D. 89 kg

Read Explanation:

Total weight of 50 people = 50 x 40 = 2000 Total weight of 49 people = 49 x 39 = 1911 Weight of the person who left = 2000 - 1911 = 89


Related Questions:

The average age of 20 students is 12 years. If the teacher's age is included ,average increases by one. The age of the teacher is
5 ആളുകളുടെ ശമ്പളം 7,500, 6,000, 7,000, 8,000, 6,500 ആണ് എങ്കിൽ ആളുകളുടെ ശരാശരി ശമ്പളം കണ്ടെത്തുക ?

What will be the difference between the sale price (in INR) of a book with a marked price

INR 1,500 under the following discount schemes?

(i) Two successive discounts of 20% each

(ii) Two successive discounts of 30% and 10%

The average weight of Anwar, Amit and Gopal is 45 kg. If the average weight of Anwar and Amit be 43 kg and that of Amit and Gopal be 42 kg, then the weight of Amit (in kg) is:
If mean of the data 11, 17, x + 1, 3x, 19, 2x-4, x + 5 is 21, then find the mode of the data.