model 8 find monthly income Section-Wise Topic Notes With Detailed Explanation And Example Questions

Question : 1

Average income of ‘A’ and ‘B’ is Rs.200 and average income of ‘C’ and ‘D’ is Rs.250. The average income of A, B, C and D is

a) Rs.225

b) Rs.200

c) Rs.125

d) Rs.106.25

Question : 2

The average monthly expenditure of a family for the first four months is Rs.2570, for the next three months Rs.2490 and for the last five months Rs.3030. If the family saves Rs.5320 during the whole year, the average monthly income of the family during the year is

a) Rs.3580

b) Rs.3200

c) Rs.3185

d) Rs.3000

Question : 3

The average daily income of 7 men, 11 women and 2 boys is Rs. 257.50. If the average daily income of the men is Rs.10 more than that of women and the average daily income of the women is Rs.10 more than that of boys, the average daily income of a man is

a) Rs. 257

b) Rs. 265

c) Rs. 250

d) Rs. 277.5

Question : 4

The average expenditure of a man for the first five months is Rs.1200 and for the next seven months is Rs.1300. If he saves Rs.2900 in that year, his monthly average income is :

a) Rs.1400

b) Rs.1700

c) Rs.1600

d) Rs.1500

Question : 5

The average monthly salary of 19 members of a group is Rs. 16000. If one more member whose monthly salary is Rs. 20000 joins the group, then the average salary of the group is

a) Rs. 16250

b) Rs. 18000

c) Rs. 16200

d) Rs. 18250

Question : 6

The average salary of all the workers in a workshop is Rs.8,000. The average salary of 7 technicians is Rs.12,000 and the average salary of the rest is Rs.6,000. The total number of workers in the workshop is

a) 23

b) 22

c) 21

d) 20