Question of the day 7-2-2017

The average price of 10 books is Rs.12 while the average price of 8 of these books is Rs.11.75. Of the remaining two books, if the price of one book is 60%$\mathrm{<span\; style="color:\; blue;">\; <span\; style="background:\; white;\; font-family:\; "Times\; New\; Roman",\; serif;\; font-size:\; 16pt;\; line-height:\; 115\%;">more\; than\; the\; price\; of\; the\; other,\; what\; is\; the\; price\; of\; each\; of\; these\; two\; books?</span></span>}$
$\mathrm{<span\; style="color:\; blue;"><span\; style="background:\; white;\; font-family:\; "Times\; New\; Roman",\; serif;\; font-size:\; 16pt;\; line-height:\; 115\%;">a)\; Rs.\; 10,\; Rs.\; 16</span></span>}$
$\mathrm{<span\; style="background-color:\; white;\; color:\; blue;\; font-family:\; "Times\; New\; Roman",\; serif;\; font-size:\; 21.3333px;">b)\; Rs.\; 10,\; Rs.\; 8</span>}$
$\mathrm{<span\; style="background-color:\; white;\; color:\; blue;\; font-family:\; "Times\; New\; Roman",\; serif;\; font-size:\; 21.3333px;">c)\; Rs.\; 10,\; Rs.\; 5</span>}$
$\mathrm{<span\; style="background-color:\; white;\; color:\; blue;\; font-family:\; "Times\; New\; Roman",\; serif;\; font-size:\; 21.3333px;">d)\; Rs.\; 10,\; Rs.\; 24</span>}$
$\mathrm{<span\; style="background-color:\; white;\; color:\; blue;\; font-family:\; "Times\; New\; Roman",\; serif;\; font-size:\; 21.3333px;">e)\; None.</span>}$
$\mathrm{<span\; style="background-color:\; white;\; color:\; blue;\; font-family:\; "Times\; New\; Roman",\; serif;\; font-size:\; 21.3333px;"><br></span>}$