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13. A sum of 800 is in the form of denominations of 10 and 20. If the total number oinotes is 50, find the number of notes of each type. |
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Answer» Answer: let Rs 10=x Let Rs21=y x+y=50-(1) 10x+120y=800 x+2y=80-(2) SUBTRACTING equation 1 from equation 2 y=30 x=20 20 NOTES of 10 Rs 30 notes of 20 Rs. Step-by-step explanation: |
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