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A piggy bank contains 510. If the number of 20 notes is one more than that of 50. Find the number ofnotes of each type.17. |
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Answer» Answer: notes of Rs50 is 7 and notes of Rs20 is 8 Step-by-step explanation: let the note of 50 = X then, note of 20 = x + 1 total rupees contain piggy BANK = 510 50x + 20(x + 1) = 510 50x + 20X + 20 = 510 70x + 20 = 510 70x = 510 - 20 70x = 490 x = 490/70 x = 7notes of Rs50 = x = 7 notes of Rs20 = x+1 = 7+1 = 8
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