Question
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- The average of fifty numbers is 55 while the average of first twenty-five numbers and last twenty-five numbers is 60 and 70, respectively. Find the twenty-...
The average height of each student in a class of 36 students is 169 cm. If 4 new students joined the class, then the average height of the each student ...
The average age of 4 children in a family is 30% of the average age of the mother and the youngest child. The total age of the father and the eldest chi...
Five friends each contributed Rs. 70. If the sixth friend gives Rs. 50 more than the average contribution of all six, how much did the sixth friend cont...
Aman spends an average of Rs. 400 on Sundays and Rs. 280 on the other days. Find his average spending in a 30-day month starting with Sunday.
The average age of X, Y, and Z is 25 years, and the average age of X and Y was 19.5 years at the time of Z's birth. If X is now 30 years old, determine ...
The average age of P, Q, and R is 22 years. Two years ago, the sum of the ages of P and Q was 5 years less than the age of R. Find the present age of R.
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 of six numbers is 8. When three new numbers are included in such a way that the first number is  twice the second and second number is thri...
- Rs. 5600 is divided among 'X', 'Y', 'Z', and 'W' in the ratio 4:6:3:7. Then, 'Y' gives 60% of the average of 'X' and 'W’s' amount to 'Z'. Find the averag...
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