Question

Find the cost of papering the four walls of a room 16m long ,12m broad and 8 metres high with paper 2 metres wide at Rs 50 per metre

Answer 1

If it's $50 a meter, then the answer is:
x is the cost per meter
16x + 12x + 8x + 2x

But that answer is 5,075,020,100 and that is a ridiculously high number.  I hope this helps even if it doesn't answer the question.