हिंदी

Seeta Devi Has Rs 9 in Fifty-paise and Twenty Five-paise Coins. She Has Twice as Many Twenty-five Paise Coins as She Has Fifty-paise Coins. How Many Coins of Each Kind Does She Have? - Mathematics

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प्रश्न

Seeta Devi has Rs 9 in fifty-paise and twenty five-paise coins. She has twice as many twenty-five paise coins as she has fifty-paise coins. How many coins of each kind does she have?

योग

उत्तर

Let the number of 50 paise coins be x . 
Therefore, the number of 25 paise coins will be 2x . 
Value of 50 paise coins = Rs . 0 . 5x
Value of 25 paise coins = Rs.0.25×2x
According to the question, 
0.5x+0.25×2x=9
or x = 9
∴ Number of fifty paise coins = 9
Number of twenty five paise coins = 2×9=18
 Total number of coins = 9 + 18 = 27.

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अध्याय 9: Linear Equation in One Variable - Exercise 9.4 [पृष्ठ २९]

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आरडी शर्मा Mathematics [English] Class 8
अध्याय 9 Linear Equation in One Variable
Exercise 9.4 | Q 10 | पृष्ठ २९

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