If 85% of the D type mobile produced in each year were sold by the company, how many D type mobiles remained unsold?

Answer: Option C

'D' type production in 2007
= 35 × $$\frac{10}{100}$$
'D' type production in 2008
= 44 × $$\frac{10}{100}$$
Required Answer
$$\begin{array}{rl}& =\left(35\times \frac{10}{100}+44\times \frac{10}{100}\right)\times \frac{15}{100}\\ & =118500\end{array}$$