[64] The average number of visitors of a library in the first 4 days of a week was 58. The average for th

For Competitive Exams

The average number of visitors of a library in the first 4 days of a week was 58. The average for the 2nd, 3rd, 4th and 5th days was 60. If the number of visitors on the 1st and 5th days were in the ratio 7:8 then what is the number of visitors on the 5th day of the library?

Explanation:
If number of visitors on 1st, 2nd, 3rd, 4th and 5th day are a, b, c, d and e respectively then
a + b + c + d = 58 × 4 = 232 - - - (i)
b + c + d + e = 60 × 4 = 240 - - - (ii)
Subtracting (i) from (ii), e – a = 8 - - - (iii)
Given that e : a = 8 : 7
Let e = 8x and a = 7x.
Given, 8x – 7x = 8 ⇒ x = 8 - - - (iv)
So a = 56 and e = 64.

Additional Questions

A man said to a lady, "Your mothers husbands sister is my aunt". How is the lady related to the man.	Answer
If a man reduces the selling price of a fan from 400 to 380 his loss increases by 20% .What is the cost price of fan ?	Answer
260 can be represented as:	Answer
A piece of ribbon 4 yards long is used to make bows requiring 15 inches of ribbon for each. What is the maximum number of bows that can be made?	Answer
What is the next number of the following sequence 21,77,165,285,......	Answer
A two-digit number is such that the product of the digits is 8. When 18 is added to the number, then the digits are reversed. The number is:	Answer
Two guys work at some speed. After some time one guy realises he has done only half of the other guy completed which is equal to half of what is left So how much faster than the other is this guy supposed to do to finish with the first.	Answer
We are given 100 pieces of a puzzle. If fixing two components together is counted as 1 move ( a component can be one piece or an already fixed set of pieces), how many moves do we need to fix the entire puzzle.	Answer
The ime a passenger train takes to cross another freight train is twice when the passenger train crosses the freight train running in opposite directions. What is the ratio of their speeds?	Answer
At a recent birthday party there were four mothers and their children. Aged 1,2,3 and 4. from the clues below can you work out whose child is whose and their relevant ages? It was janes childs birthday party. Brian is not the oldest child. Sarah had Anne just over a year ago. Lauras Child will be next birthday. Daniel is older than Charlie is. Teresas child is the oldest. Charlie is older than Lauras child.	Answer

Share with Friends