Question

solve for x x square - (2b-1 ) x+ (b square - b- 20 ) = 0 .​

Answer 1

Step-by-step explanation:

Solution :-

let the age of son and father be 2y and 7y

2y - 6/7y - 6 = 1:6

6(2y - 6) = 1(7y - 6)

12y - 36 = 7y - 6

12y - 7y = 36 - 6

5y = 30

y = 6

Father = 7y = 7(6) = 42 years

Son = 2y = 2(6) = 12 years

After 4 years

42 + 4/12 + 4

46/16