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A man has only 20 paise …

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A man has only 20 paise coins and 25 paise coining his purse. If he has 50 coins in all totalling Rs 11.25. How many coins of each kind does he have

    • Posted by Satish Suryawanshi 6 years, 7 months ago

    CBSE > Class 10 > Mathematics
    • 1 answers

    ????? ? 6 years, 7 months ago

    Let no. of 20 paise coins is x and no. of 25 paise coins is y. Then by the given question, x+y=50 →equ.(1) and 20x+25y=1125 [∵, Rs. 11.25=1125 paise] or, 4x+5y=225 →equ.(2) Multiplying (1) with 4 we get, 4x+4y=200→equ.(3) Subtracting (3) from (2) we get, y=25 Putting in (1) x=50-y=50-25=25; ∴x=25, y=25

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