Answer: There are 450 million mobile users in India last year.
Step-by-step explanation:
Since we have given that
Number of mobile users today = 540 million
Every year mobile users in India have gone up by 20% in a year.
Let the number of mobile users in India last year be x
So, According to question, we have,
[tex]x\times \frac{100+20}{100}=540\\\\x\times\frac{120}{100}=540\\\\x\times 1.2=540\\\\x=\frac{540}{1.2}\\\\x=450[/tex]
Hence, there are 450 million mobile users in India last year.
