Question
Average of 8 numbers is 25. If average of first four and
last two numbers is 15 and 40, respectively then find the fifth number given that ratio of fifth and sixth number is 7:5, respectively.Solution
Let fifth and sixth numbers be ‘7x’ and ‘5x’, respectively. So, 7x + 5x = 25 × 8 – 15 × 7 – 40 × 5 = 60 Or, 12x = 60 Or, x = 5 So, fifth number = 5 × 7 = 35
More Average Questions
If S is related to Social science and V is related to English in a certain way. Then, Q is related to which of the following?
Achillea was exhibited by which state?
What is the position of G with respect to the one who read The Pioneer?
How many boxes are placed between box S and box R?
- Five subjects Physics, Chemistry, Hindi, English and Math (not necessarily in the same order) are taught from Monday to Friday. One day a subject is taught...
How many persons have positions between G and D?
On which floor does A live?
Who among the following person stays on flat no. 2 of floor no. 5?
Which of the following statements is correct?
Who among them are studying in class 5?
Relevant for Exams:
