Question 30If $\log_{10}2=a$ and $\log_{10}3=b,$ then $\log_5 12$ equals:$\dfrac{a+b}{a+1}$$\dfrac{2a+b}{a+1}$$\dfrac{a+2b}{1+a}$$\dfrac{2a+b}{1-a}$$\dfrac{a+2b}{1-a}$