A stationery shop sells two kinds of notebooks: ruled and plain
MATHEMATICS · Multi-part · A Level · Mathematics · Algebra and Functions · Algebra and Functions
Problem
A stationery shop sells two kinds of notebooks: ruled and plain. Eight ruled notebooks and five plain notebooks together cost ₹155. Five ruled notebooks and three plain notebooks together cost ₹95.
(i) Taking the cost of one ruled notebook as x rupees and that of one plain notebook as y rupees, form two linear equations in x and y that model the above information.
(ii) Solve the equations obtained in part (i) to find the cost of each type of notebook.
(iii) How much will the shop charge for 3 ruled and 4 plain notebooks bought together?