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प्रश्न
The cost of 28 books are ₹ 1506.4. Find the cost of one book
योग
उत्तर
Cost of 28 books = ₹ 1506.4
Cost of 1 book = `1506.4/28`
= `(15064/10)/(28/1)`
= `15064/10 xx 1/28`
= `15064/28 xx 1/10`
= `538 xx 1/10`
= `538/10`
= ₹ 53.80
∴ Cost of 1 book = ₹ 53.80
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