Question
The average wage of a group of 30 labourers is Rs. 400.
If 4 persons receiving average wage of Rs. 320 leave the group and 2 persons receiving average wage of Rs. K join the group, then the average wage of the group increases by Rs. 45. Find the value of ‘K’.Solution
Total wage of 30 labourers in the initial group = 30 × 400 = Rs. 12000 New average wage of the group = 400 + 45 = Rs. 445 New number of labourers in the group = 30 – 4 + 2 = 28 So, according to the question, 12000 – 4 × 320 + 2K = 445 × 28 Or, 12000 – 1280 + 2K = 12460 Or, 12000 + 2K = 12460 Or, 2K = 12460 – 12000 = 1740 Or, K = (1740/2) = 870
Select the correct option that indicates the arrangement of the given words in a logical and meaningful order.
1. Shirt piece
2. Thread
Which of the following letter-clusters will replace the question mark (?) in the given series?
ZG, BD, CX, EO, FC, ?
‘A + B’ means ‘A is the brother of B’.
‘A – B’ means ‘A is the wife of B’.
‘A × B’ means ‘A is the father of B’...
Select the correct mirror image of the given figure when the mirror MN is placed to the right side of the figure.
A statement followed by some conclusions are given below.
Statement : Nowadays, life has become very difficult without a mobile phone
...
In the given figure, how many pens are blue?
Select the option that is related to the third word in the same way as the second word is related to the first word.
Fuel : Diesel : : Utensils : ?
In the following question, two statements are given and these statements are followed by four conclusions. You have to take the given two statements to ...
In each of the number-pairs, the second number is obtained by performing a certain mathematical operation on the first number. Three of the following pa...
Walter in Heisenberg's twin brother. Heisenberg in Eva's brother, Newton in Eva's father and Skyler's brother. Skyler is the mother of two children and ...
Relevant for Exams:
