Average age of A, B and C is 20 years. Average age of B and C was 12 years when A was born. If B is 21 years old, then, find the age of C, 6 years hence.
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 fift...
Average 20 numbers is ‘x’. If the average of first 12 numbers is 62.5 while average of last 5 numbers is 84.8 and 13th, 14th...
In a school, there are 30 male students and 20 female students. The average marks of male students is 58 and that of female students is 62. Calculate th...
Average of 8 numbers is 50. If average of first four and last two numbers is 40 and 35, respectively then find the fifth number given that ratio of fift...
Sum of ages of 80 people is 1600 years. The average age of 30 of them is 18 years and average age of another 30 of them is 14 years. Find the average a...
The average of five positive numbers is 56. If the first number is three-fourth of the sum of the last four numbers, then the average of the last four n...
The average weight of a group of 15 students increases by 1.5 kg when the weight of the teacher is also included. If earlier the average weight of the g...
Rohit contributed 96 runs, which was 60% of his team’s total score. If the team got 12 runs as extras, how many runs were made by the rest of the play...
The average weight of 7 men decreases by 3 kg when one of them weighing 150 kg is replaced by another person. Find the weight of the new person
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