model 1 basic average questions Practice Questions Answers Test with Solutions & More Shortcuts

Question : 6 [S.S.C. (CHSL) 2011]

a, b, c, d, e, f, g are consecutive even numbers. j, k, l, m, n are consecutive odd numbers. The average of all the numbers is

a) $3(\text"a+n"/2)$

b) $(\text"l+d"/2)$

c) $\text"a+b+m+n"/4$

d) $\text"j+c+n+g"/4$

Question : 7 [S.S.C. (CHSL) 2013]

The average of nine consecutive numbers is n. If the next two numbers are also included the new average w

a) increase by 2

b) remain the same

c) increase by 1.5

d) increase by 1

Question : 8 [S.S.C. (CGL) 2012]

The average of 5 consecutive integers starting with ‘m’ is n. What is the average of 6 consecutive integers starting with (m + 2) ?

a) $\text"2n+5"/2$

b) $n+2$

c) $n+3$

d) $\text"2n+9"/2$

Question : 9 [S.S.C. (CGL) 2013]

If a, b, c, d, e are five consecutive odd numbers, their average is

a) $5(a+4)$

b) $\text"abcde"/5$

c) $5(a+b+c+d+e)$

d) $a+4$

Question : 10

The average monthly income (in ₨) of certain agricultural workers is S and that of other workers is T. The number of agricultural workers is 11 times that of other workers. Then, the average monthly income (in ₨) of all the workers is :

a) $\text"S+11T"/12$

b) $\text"S+T"/12$

c) $\text"11S+T"/12$

d) $1/\text"11S"+T$