Question

the minimum charge of telephone call upto 175 calls is rs200 and each additional call is rs 1.if a man paid rs1988.8 with 10%TSC and 13%VAT of his one month telephone bill find the number of extra call of the month.​

Answer 1

The number of extra call of the month is
`1332\ Calls`

Explanation:

Given charge of telephone up to
`175` calls is
`Rs\ 200`

And each additional call costs
`Rs\ 1`

Also, there are
`10` % TSC and
`13` % VAT.

So, total tax is
`10+13`
`=23` %

And total bill paid is
`Rs\ 1988.8`

We need to find number of extra call of the month.

So, amount before paying the tax would be

`1988.8`
`-14`% of
`1988.8`

`=1988.8-1988.8*(14)/(100)\\\\=1988.8-457.424\\\\=1531.376`

Also, minimum charge of telephone is
`Rs\ 200`

Amount after deduction minimum charge is

`1531.376-200\\\\=Rs\ 1331.376`

It is given each additional call costs
`Rs\ 1`

So, total number of extra calls are
`(Rs\ 1331.376)/(Rs\ 1)=1331.376`≅
`1332\ Calls`