Q. The minimum charge of telephone call upto 175 calls is Rs 200 and for each additional call is Re. 1. If a man paid Rs. 328.90 with 10% VAT of his one month telephone bill, find how many extra calls of that month were made? ~ Notes Questions Answers

Comp. Mathematics IX Q. The minimum charge of telephone call upto 175 calls is Rs 200 and for each additional call is Re. 1. If a man paid Rs. 328.90 with 10% VAT of his one month telephone bill, find how many extra calls of that month were made?

Q. The minimum charge of telephone call upto 175 calls is Rs 200 and for each additional call is Re. 1. If a man paid Rs. 328.90 with 10% VAT of his one month telephone bill, find how many extra calls of that month were made?

Soln:

Here, the minimum charge of 175 calls = Rs 200

Let, the charge of telephone calls without 10%VAT = Rs x.

x + 10% of x = Rs 328.90

(11/10)*x = Rs 328.90

x = Rs299

Now, the charge for extra calls = Rs 299 - Rs 200 = Rs 99

The rate of cost of each extra call = Re 1

Therefore, the number of extra calls = 99/1 = 99

So, the required number of extra calls is 99.

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Q. The minimum charge of telephone call upto 175 calls is Rs 200 and for each additional call is Re. 1. If a man paid Rs. 328.90 with 10% VAT of his one month telephone bill, find how many extra calls of that month were made?

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