Question
The average income of a group of 30 freelancers is Rs.
500. If 3 freelancers earning an average of Rs. 550 leave the group and 1 freelancer earning Rs. N joins the group, then the average income of the group increases by Rs. 60. Find the value of ‘N’.Solution
Total income of 30 freelancers initially = 30 × 500 = Rs. 15000 New average income of the group = 500 + 60 = Rs. 560 New number of freelancers in the group = 30 - 3 + 1 = 28 According to the question, 15000 - 3 × 550 + N = 560 × 28 Or, 15000 - 1650 + N = 15680 Or, 13350 + N = 15680 Or, N = 15680 - 13350 = 2330
Seven boxes T, E, V, W, X, Y and Z are kept one above another. W is three boxes above Y. There are two boxes between W and Z. T is immediately above V. ...
Who among the following lives on the top most floor?
Which of the following combination is true with respect to the final arrangement?
Who likes Brown?
How many such digits are there in the number ‘95746238571’ which will remain at the same position when they are arranged in the ascending order from...
Which of the following ice cream was placed at box 5?
How many floors are there between floors of Chaman and person born in January?
Who lives in flat 1 of the bottommost floor?
Which of the following shows the position of Gems box?
What is the code of ‘beat’?
Relevant for Exams:
