Step-by-step explanation:

cost of 45 pens-540

cost of one pen-540÷45=12

cost of 23 such pens=12×23=276

Verified answer

Answer:

276 rupees.

Step-by-step explanation:

45 pens = 540 rupees

=> 1 pen = 540/45 = 12 rupees

=> 23 pens = 12*23 rupees = 276 rupees

Hope it helps!