26. A book costs sh. (x – 300) and a pen costs sh (x + 100). If Ndagire pad sh. 3300 for 3 books and 2 pens, how much did she pay

Question

26. A book costs sh. (x – 300) and a pen costs sh (x + 100). If Ndagire pad sh. 3300 for 3 books and 2 pens, how much did she pay for each item?​

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Kiệt Gia 1 week 2022-12-28T21:33:27+00:00 1 Answer 0 views 0

Answer ( 1 )

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    2022-12-28T21:35:03+00:00
    Answer:
    500 and 900
    Step-by-step explanation:
    3(x – 300) + 2(x + 100) = 3300 ← distribute parenthesis
    3x – 900 + 2x + 200 = 3300
    5x – 700 = 3300 ( add 700 to both sides )
    5x = 4000 ( divide both sides by 5 )
    x = 800
    Then
    cost of book = x – 300 = 800 – 300 = 500
    cost of pen = x + 100 = 800 + 100 = 900

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