Question

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17 Shaloo purchased three books at ₹37.60 each and five pens at ₹5.15 each. She gave the shopkeeper a five hundred rupee note. How much money did she get back from the shopkeeper?

Answer 1

Dear student

$$\begin{gathered} \mathrm{Cost}\mathrm{of}1\mathrm{book}=\mathrm{Rs}37.60 \\ \mathrm{So},\mathrm{cost}\mathrm{of}3\mathrm{books}=3\times 37.60=\mathrm{Rs}112.8 \\ \mathrm{Cost}\mathrm{of}1\mathrm{pen}=\mathrm{Rs}5.15 \\ \mathrm{so},\mathrm{cost}\mathrm{of}5\mathrm{pens}=5\times 5.15=\mathrm{Rs}25.75 \\ \mathrm{So},\mathrm{total}\mathrm{amount}\mathrm{to}\mathrm{be}\mathrm{paid}\mathrm{by}\mathrm{shalloo}=112.8+25.75=\mathrm{Rs}138.55 \\ \mathrm{Money}\mathrm{gave}=\mathrm{rs}500 \\ \mathrm{Money}\mathrm{to}\mathrm{be}\mathrm{returned}\mathrm{by}\mathrm{shopkeeper}=500-138.55=\mathrm{Rs}361.45 \end{gathered}$$
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