RRB Group D 3-Dec-2018 Shift 3 Solved Paper

Let Tara's age= x yrs
ATQ, Sundar's age= $\frac{\mathit{x}}{2}+1$
Mariana's age= $4\left(\frac{\mathit{x}}{2}+1\right)-3$
Shefali's age= $\mathit{x}+5=1\left(\frac{\mathit{x}}{2}+1\right)-3-4$
Equality Shefali's age
$\mathit{x}+5=4\left(\frac{\mathit{x}}{2}+1\right)-7$
$\mathit{x}+5=2\mathit{x}+4-7$
$\mathit{x}=8$
Thus, Tara's age= 8 yrs
Sundar's age= 5 yrs
Mariana's age = 17 yrs
Shefali's age = 13 yrs
Sum of their ages = 43 yrs.