Question

answer in unitary method if a cell phone company charges rupees 80 for 1000 sms what is the rater per sms

Answer 1

if it 80 rupees for 1000 sms
rate of 1 sms = 1000/80 rs.
rate of 1 sms = 12.5 rs

Answer 2

Charge for 1000 sms = Rs 80
Therefore charge for 1 sms = Rs 80/1000 = Rs 0.08
The rate per sms is Rs 0.08 per sms