5 positive numbers are written on a piece of paper. Sum of first 3 numbers is 60 and ratio of the 4th and the 5th number is 2:3. If difference between the 4th and the 5th number is 14, then find the average of all the numbers.
Given, 4th number:5th number = 2:3 Let, 4th number = 2x 5th number = 3x So, 3x – 2x = 14 Or, x = 14 Required average = {(60 + 14 × 2 + 14 × 3)/5} = (130/5) = 26
The average cost of 3 chairs is Rs. 9500. The average cost decrease by 15% when one more chair is included. What is the cost price of the 4th...
The average age of the employee in a company is 23.5 years. And the average of the males in the company is 25.2 years and that of the females is 23.2 ye...
The average wage of a group of 49 labourers is Rs. 650. If 4 persons receiving average wage of Rs. 500 leave the group and 2 persons receiving average w...
5 positive numbers are written on a piece of paper. Sum of first 3 numbers is 60 and ratio of the 4th and the 5th number is 2:3. If difference between t...
The average height of each student in a class of 20 students is 125 cm. If 10 new students joined the class, then the average height of the each student...
The average age of A and B is 15 years. If A is to be replaced by C, the average would be 14 years. The average age of C and A is 16 years. Find the age...
Average run scored by a batsman in 20 innings is 60. In next 6 innings, he scored runs with an average of ‘x’ so that his overall average increases ...
The average of 13 numbers is 10.The average of first 6 numbers is 8 and that of the last 6 numbers is 10. What will be the 13th number?
Average weight of a team of 11 persons is 32 kg. When one more person joins the team, the average weight of the team increases by 5 kg. Find the weight ...
The student's marks were wrongly entered as 55 instead of 25. Due to this, the average marks for the class increased by 1 /4 The number of students in t...
