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The average weight of five friends A, B, C, D and E is (x+5) years while the average weight of C and E is (x-5) kg. If the weight of another person F is...
The average of 14, 57, and z is 40. What is the value of z?
Average of 8 numbers is 70. If average of first four and last two numbers is 90 and 50, respectively then find the fifth number given that ratio of fift...
The average of five even numbers is 74. If we replace two of these even numbers, 84 and 96, with a single even number X, the new average decreases by 4....
There are 15 numbers such that average of first 12 numbers is 65 while the average of last five numbers is 76. Find the 12th number, if the ratio betwee...
The average age of A and B is 21 years. If A is to be replaced by C, the average would be 20 years. The average age of C and A is 22 years. Find the age...
The average cost price of 25 pens (having equal cost price) decreased by Rs.4, when one of the pen is replaced by a new pen having cost price of Rs.60. ...
The total number of teachers in Department A and Department B together is 112. The number of teachers in Department A is 80% more...
Each side of a rhombus is 20cm long and the length of one of its diagonals is 24cm, then find the area of the rhombus.
The average cost price of 13 pens (having equal cost price) decreased by Rs.3, when one of the pen is replaced by a new pen having cost price of Rs.60. ...
