# CBSE Class 9 Answered

**A lending library has a fixed charge for the first three days and an additional charge for each day there after. Neeru paid Rs. 21 for a book kept for five days . Write a linear equation which satisfies this data. Draw trhe graph for the same.**

Asked by manmeetsaini1516 | 30 Jun, 2022, 09:36: AM

Expert Answer

No. of days left = 5 - 3 = 2 days

Amount paid for a book = Rs 21

There is additional charges for each day

Let the fixed charge be x and the additional charges for each day be y

The charges for first 3 days is x

After which the charges for rest of the 2 days is 2y

∴ Required linear equation which satisfies the data is

x + 2y = 21

Answered by Renu Varma | 30 Jun, 2022, 12:51: PM

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