hi,
for first four months average salary is 4000 rs.
so total of first four month= 4000*4= 16000.
for next four months average salary is 5600 rs.
so total of next four month= 5600*4= 22400.
for last four months average salary is 6420 rs.
so total of last four month= 6420*4= 25680
now total income of all 12 month is = 16000+22400+25680
the average monthly income is = (16000+22400+25680)/12
find the solution, you may get the answer.
Question : A man spends Rs. 2,300 monthly on average for the first four months and Rs. 1,800 monthly for the next eight months and saves Rs. 12,400 a year. Find his monthly income.
Option 1: Rs. 3,000
Option 2: Rs. 2,400
Option 3: Rs. 2,200
Option 4: Rs. 2,100
Question : A man spends Rs. 1,800 monthly on average for the first four months and Rs. 2,000 monthly for the next eight months and saves Rs. 5,600 a year. His average monthly income is:
Option 1: Rs. 2,000
Option 2: Rs. 2,200
Option 3: Rs. 2,400
Option 4: Rs. 2,600
Question : The average monthly expenditure of a family for the first four months is Rs. 2,570 and for the next three months Rs. 2,490, and for the last five months Rs. 3,030. If the family saves Rs. 5,320 during the whole year, the average monthly income of the family during the year is:
Option 2: Rs. 3,185
Option 3: Rs. 3,200
Option 4: Rs. 3,580
Question : The average monthly income of A and B is Rs, 7,000. The average monthly income of B and C is Rs, 7,750 and the average monthly income of C and A is Rs, 6,750. What is the monthly income of B?
Option 1: Rs. 6,500
Option 2: Rs. 8,000
Option 3: Rs. 7,500
Option 4: Rs. 6,000
Question : The average expenditure of a man for the first five months is INR 1,200 and for the next seven months is INR 1,300. If he saves INR 2,900 in that year, his monthly average income is:
Option 1: INR 1,500
Option 2: INR 1,600
Option 3: INR 1,700
Option 4: INR 1,400
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