Question
Perimeter of a square field is 100 meters and the area
of a rectangular field is 60% more than that of the square field. Find the area (in m2) of a rectangular field.Solution
Let the length of each side of the square field be ‘x’ meters. => 4a = 100 => x = 25 Area of square field = 25 × 25 = 625 m2 Area of a rectangular field = 625 × (160/100) = 1000 m2
A cricketer scored 240 runs in his first six matches of a tournament. Find the average runs the cricketer must score in the next four matches so that hi...
A student got an average score of certain marks in the first 16 tests. In the next 4 tests, she scored 76 marks on average. This raised her overall aver...
The average weight of 48 students in a school is 32 kg. If two new students with weights of 'x' kg and '(x + 6)' kg join the group, the average weight o...
- The average weight of a group of people is 62 kg. A person weighing 80 kg joins the group and the average increases by 1 kg. Find the total weight of the g...
2040, 600, 240, 150, ?, 121.875
The average monthly salary of 12 employees is ₹45,000. If the salary of one employee is excluded, the average decreases by ₹1,500. What is the salar...
- The average weight of 35 boxes is 24.8 kg. After removing 5 boxes, the average weight becomes 26.1 kg. Find the average weight of the boxes that were remov...
The average age of 12 boys in the group is 9 years. If 2 more boys join the group, the average is increased by 1 year. What is the average age (in years...
The average score of 'x' boys is (x + 5), and the average score of 30 girls is (3x - 10). If the combined average score of all students is 60, then find...
- Average of 10 quantities is 35. If two extra quantities are added whose average is 'x', the new average rises by 10%. Find the value of 'x'.