Question

The total number of cellular phones (both Nokia and Samsung) sold by stores Q increased by 15% from October to November and the total number of cellular phones (both Nokia and Samsung) sold by store T increased by 5% from October to November. What was the total number of cellular phones sold by stores Q and T together in November?

• A. 3540
• B. 3720
• C. 3640
• D. 3420
• E. 3880

Answer 1

The correct option is C 3640


Total Number = 11200
$\begin{array}{cc}Store& Nokia/Samsung\\ P& 4:3\\ Q& 3:1\\ R& 5:4\\ S& 7:6\\ T& 1:4\\ U& 11:10\end{array}$
Total Number of cellular phones sold by stores Q in October.
$=\frac{10}{100}\times 11200=1120$
sold in November $=1120\times \frac{115}{100}=1288$
Total Number of cellular phones by company T in October
$=\frac{20}{100}\times 11200=2240$
Sold in November =$2240\times =\frac{105}{100}=2352$
Total Phones sold $=3252+1288=3640$