Question

$i \: want \: both \: all \: question \:answer$
I want both means all question answer ​

Answer 1

Answer:

12. = 18 years

13. = 2 and 8, Number is 28

15. = 7/6

Step-by-step explanation:

12. Present age of Bhuvan = 5

Present age of Father = 28

let the year be = x

2(5 + x) = 28 + x

10 + 2x = 28 + x

2x - x = 28 - 10

13. let the tens digit be = x

let ones digit be = 4x

x + 4x = 10

5x = 10

x = 10/5

x = 2

4x = 8

Number is 28

15. let Numerator be = x + 1

let denominator be = x

(x+1) - 5/x - 5 = 2

x - 4/x - 5 = 2

2x - 10 = x - 4

2x - x = 10 - 4

x = 6

x + 1 = 7

Fraction = 7/6