Question

d) The ratio of the monthly income and expenditure of a family is 7:4. If the income
of the family in a month is Rs 21.000, find
(i) the monthly expenditure,
(ii) The saving in a month​

Answer 1

Answer:

5

21

Step-by-step explanation:

7x+4x=21

11x=21

x=21/11

Answer 2

Answer:

1)Rs.12000

2)Rs.9000

Step-by-step explanation:

let x be the expenditure

given income : expenditure = 7:4 = 21,000:x

         so, 7/4=21000/x

                7x=84000

                  x=12000

therefore the monthly expenditure is Rs.12000

savings= income - expenditure = 21000-12000 = 9000

therefore savings = Rs.9000