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10 April, 12:00

Tina practiced piano for 15 hours last month and 45 hours this month A. Use multiplication to write a statement comparing the hours Tina practice during the two months B. Use addition to write a statement comparing the hours Tina practice during the two months

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  1. 10 April, 12:10
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    Answer: The answer is (a) 3 * x = y and (b) x + x + x = y.

    Step-by-step explanation: Let 'x' and 'y' denote the number of hours that Tina practised last month and this month respectively.

    Then, according to the given information, we have

    x = 15 and y = 45.

    We can write the relation between 'x' and 'y' in two forms as follows -

    (a) Multiplication form : 3 * 5 = 15 implies 3 * x = y.

    (b) Addition form : 15 + 15 + 15 = 45 implies x + x + x = y.

    Thus, the answers are (3 * x = y) and (x + x + x = y).
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