Question
The proportion of books sold by Sita on Monday to those
on Tuesday stands at 8:5. Sita's book sales on Wednesday exceed Tuesday's by 34, while Thursday's sales are 16 less than Monday's. If the ratio of books sold on Wednesday to those on Thursday is 61:80, then calculate the quantity of books sold on Monday.Solution
ATQ, Let, number of books sold by Sita on Monday and Tuesday be ‘8x’ and ‘5x’, respectively. So, (5x + 34)/(8x – 16) = 61/80 400x + 2720 = 488x – 976 88x = 3696 x = 42 Number of books sold on Monday = 8 × 42 = 336
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