A shopkeeper has 3 varieties of pens ‘A’, ‘B’ and ‘C’. Meenu purchased 1 pen of each variety for a total of Rs. 21. Jeevan purchased 4 pens of ‘A’ variety, 3 pens of ‘B’ variety and 2 pens of ‘C’ variety for Rs. 60. While Shikha purchased 6 pens of ‘A’ variety, 2 pens of ‘B’ variety and 3 pens of ‘C’ variety for Rs. 70. Using matrix method, find cost of each variety of pen.

A shopkeeper has 3 varieties of pens ' A^(prime),\ ' B ' and ' C ' . Meenu purchased 1 pen of each variety for a total of Rs 21. Jeen purchased 4 pens of ' A ' variety, 3 pens of ' B ' variety and 2 pens of ' C ' ariety for Rs 60. While Shikha purchased 6 pens of ' A ' variety, 2 pens of ' B ' variety and 3 pens of ' C ' variety for Rs 70. Using matrix method find the cost of each pen.

A lot of pens ...... been purchased. (has/have)

3 pencils and 4 pens cost Rs. 270 while 4 pencils and 3 pens cost Rs. 150 . Find the combined cost of one pencil and one pen.

Raj purchases 10 pens for Rs.150 and Rajesh buys 6 for Rs. 84. Who got the cheapest pens?

If 8 pens cost Rs. w, find the cost of 5 such pens.

30 pens and 75 pencils were purchased for Rs. 390. If the average price of a pencil is rs. 2.00, then calculate the average price (in Rs.) of a pen.

Cost of a dozen pens is Rs. 180 and cost of 8 ball pens is Rs. 56. Find the ratio of cost of a pen to the cost of a ball pen.

3 bags and 4 pens together cost Rs 257 whereas 4 bags and 3 pens together cost Rs324. Find the total cost of 1 bag and 10 pens.

37pens and 53 pencils together cost Rs.320 , while 53 pens and 37 pencils together cost Rs ,400 .Find the cost of a pen and that of a pencil.