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Class 7 maths · P.7 · Equation word problems

Word problems: mixed equation situations

Write an equation for the situation, then solve it.

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  1. A phone is charged to 54%. It loses 5% each hour. After how many hours is it at 24%?

    Answer: 6

  2. A diver is at −9 m and rises 3 m each minute. After how many minutes is she at 15 m?

    Answer: 8

  3. A plant is 8 cm tall and grows 2 cm each week. After how many weeks is it 32 cm tall?

    Answer: 12

Tip: Write an equation for the situation, then solve it.

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