Question

Write a linear equation in two variables to represent the following statements.
i) After 2 years a man will be four times as old as his son. Present age of man is x and son is y.
ii) In a rectangle if the breadth is increased by 12 m and the length is decreased by 5 m, then
the area is increased by 140 m2

.Take length as x and breadth as y.
please guys help....

iii) In a two digit number, if 18 is added to the number then the digits are interchanged

Answer 1

1) present age of man and son is x and y

age after 2 years of man and son is x+2 and y+2

req equation is

x+2 = 2 (y+2)

2)