21. Shivi gave a note of 2,000 for a pair of jeans worth 500. She was returned 11 notes in denominations of 200 and 100. .Frame pair of linear equations that can be used to find the number of notes of two denominations.
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100 notes only . Meena got 25 notes in all . Let the number of Rs 50 notes and Rs 100 notes be x and y. Hence, Meena has 10 notes of Rs 50 and 15 notes of Rs 100
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