• # question_answer 30) Raju purchases 10 pens for Rs. 150 and Manish buys 7 pens for Rs. 84. Can you say who got the pens cheaper? TIPS Firstly, find the cost of 1 pen for both Raju and Manish by unitary method, then compare who got the pens cheaper.

For Raju, Cost of 10 pens = Rs. 150                 $\therefore$Cost of 1 pen = Rs. $\frac{150}{10}=$Rs. 15 For Manish, Cost of 7 pens = Rs. 84 $\therefore$ Cost of 1 pen = Rs. $\frac{84}{7}=$ Rs. 12 Here,     Rs. 12 < Rs. 15 Hence, Manish got the pens cheaper.