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Let the sum of age of 10 men = 10x And the age of two new men = y yrs According to the question, 10x - 24 -26 + y = 10(x+2) 10x - 50 + y = 10x + 20 y = 70 Average age of New men = y/2 = 70/2 = 35 years Alternate method: Sum of ages of two new persons = sum of ages of two persons repaled + change in average ×number of persons = 26+24+2×10 = 50 + 2×10 =50+20 = 70 So average of ages of new persons = 70/2 = 35 years
Matthew sells Chocolates in the packs of 6 chocolates, 12 chocolates, 18 chocolates and 24 chocolates etc, but the rate is necessarily uniform. One day ...
The mode of the sample data = is 24 and the median = 80. Find the mean of this distribution
21 is divided into three parts which are in arithmetic progression (A.P.) in such a way that the sum of their square is 179. Find the smallest part.
Amish invested 2500 Rupees in each of these schemes, offering simple interest of 12% per annum. 16% P.A. and 15% PA. respectively. Find the total intere...
The median of the following data will be ___
32,25,33,27,35,29,14,26 and 30.
What will be the 11th term of the arithmetic progression 3, 8, 13, _____?
Present average age of A, B and C together is 44 years. Age of B is 12 Years hence from now will be 260% more than age of A. Four years ago from now whi...
The current age of Anupama is 25% greater than Chinky's age. Four years ago, the ages of Beena and Chinky were in the ratio of 4:...
The sum of the first 10 terms of an arithmetic sequence is 60 and the 10th term is 5. What is the first term of the sequence?
A shopkeeper bought two article A&B for a total of rupees 3500. He marked Article A 140% above its cost price and sold it after giving a discount of 20%...
