Question

$\text{If}(2m+5),4,3m\text{are in AP,}$
$\text{then, find the value of}m.$

• A. 0.6

Answer 1

The correct option is A 0.6
$\text{Given,}(2m+5),4,3m\text{are in AP,}$

So, the difference between the consecutive terms must be constant.

$\Rightarrow 4-(2m+5)=3m-4$
$\Rightarrow -1-2m=3m-4$
$\Rightarrow -5m=-4+1$
$\Rightarrow -5m=-3$
$\Rightarrow m=\frac{3}{5}=0.6$