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Let the number be x. Then, x × 7/10 – 38% of x = 112 => 7x/10 – 38x/100 = 112 => 70x – 38x = 112 × 100 => 32x = 11200 ∴ x = 350 ∴ 20% of 350 = 350 × 20/100 = 70
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 age of 6 employees in a company rises by 2 years when a new employee’s age is added. If the sum of the initial average age of the 6 employ...
The average weight of 8 people is 75 kg. When three new people with their weights in the ratio 3:4:5 joined the group, the average weight of all the peo...
Ram scored an average of 5 goals per match in his first four games. However, he didn't score any goals in the following three matches. How many goals do...
Sachin Tendulkar's average runs over 40 innings was 52. During his subsequent four innings, he scored 55, 42, 0, and 60 runs. To increase his average to...
The average age of a group of 10 friends is 27 years. If one friend leaves the group, the average becomes 25years. Find the age of the friend who left t...
In 40 matches, Mia had a bowling average of 18.6. She played 3 more matches, took 3 wickets after conceding 162 runs, and her average increased by 1.8. ...
The average cost of three chairs is Rs.11000. The average cost decrease by 20% when one more chair is included. What is the cost price of the 4th
The average age of a group of eight children is 9 years. Two children, whose ages were 7 years more and 5 years more than the average age, left. Two new...
The average weight of boys in a class is 65 kg, while the average weight of girls is 45 kg. If the overall average weight of the class is 50 kg and the ...
