Let Ritu's current age be x and Rajni's current age be y. Three years ago: x−3=2(y−3) (Ritu was twice Rajni's age) Currently: x+y=36 (Their total age is 36) Solve the equations: Ritu's current age, x = 23 Ritu's age 4 years from now = 23+4=27 years
20 students go for a picnic. 10 of them spent Rs. 64 each on their food and rest spent Rs.4 more than the average expenditure of all 20. What was the to...
The average weight of a group of 5 men increases by 2 kg when a new person weighing 78 kg joins the group. What was the average weight of the group befo...
In an examination the average marks of Rohit is 60. If he got 19 more marks in science and 26 more marks in maths then his average would have been 65. F...
The average of 10 observations is 60. It was realized later that an observation was misread as 39 in place of 93. The correct average is:
In a family of 10, the men eat on average 65 kg of food and women eat on an average 45 kg of food. The men and women are equal in number. A woman...
The average cost of 3 chairs is Rs. 10000. The average cost decrease by 22% when one more chair is included. What is the cost price of the 4th
The average age of A, B, and C is 20 years. 3 years ago, the sum of the ages of A and B was 7 more than that of C. Find the present age of C.
The mean purchase price of items 'X' and 'Y' is Rs. 600. Article 'X' is sold with a 20% profit, while article 'Y' is sold with a 30% profit. Calculate t...
The average age of 20 children and their teacher's age are 18 years. If the teacher's age is excluded, the average reduces by 1. What is the teacher's age?
The average age of each of the 20 employees in an IT company is 20 years. When you include the age of the Team leader, the company's average age becomes...
