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2014-10-04T21:42:15+05:30

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Let no. of Rs. 50 notes = x
    no. of Rs. 100 notes = y

Total notes = 25
⇒ x + y = 25
⇒ x = 25-y

total amount only in Rs. 50 notes = 50x
total amount only in Rs. 100 notes = 100y
Total amount = 2000
⇒ 50x + 100y = 2000
⇒50(25-y) + 100y = 2000
⇒50×25 - 50y + 100y = 2000
⇒1250 +50 y = 2000
⇒ 50y = 2000-1250 = 750
⇒ y = 750/50 = 15
    x = 25-15 = 10

No. of Rs. 50 notes = 10
No. of Rs. 100 notes = 15
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Hey ur ans is wrng.. i mean process is ri8 but at last no of notes u made mistake
Sry.. my intention is not to point out u... i did bcoz d person who asked should not suffer... plz edit it...
Thank you Mag. I appreciate that you pointed out my mistake....
Im meghana... u can call me... magz
2014-10-04T21:50:32+05:30
Let the number of 50 notes be x, Let the number of 100 notes be y. Then , x+y = 25. →(1) Equation And 50x+100y = 20000 → (2) equation. Substitution method: From equation (1) x= 25-y. Substituting in equation(2) 50(25-y) + 100y = 2000. 1250-50y + 100y = 2000. 50y = 2000-1250= 750. y= 750/50= 15. x = 25-15 = 10. Hence, meena received ten 50 notes and fifteen 100 notes.
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Mark it as best plz..... if u admit..