WEBVTT

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Here is the problem: A train goes 60 km/h for 2.5 hours. How far does it travel?

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Speed 60 km/h, time 2.5 hours; the distance is unknown. Distance equals rate times time; r equals 60, t equals 2.5; solve for d.

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Read the problem. Speed 60 km/h, time 2.5 hours; the distance is unknown.

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Identify the known values. Distance equals rate times time. Known: r equals 60, t equals 2.5. Unknown: distance (d).

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Write the equation. d equals r times t.

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Solve for d. d equals r times t equals 60 times 2.5.

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Result. d equals 150.

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So the answer is Distance equals 150 km.

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Substitute the known values into d equals r times t and isolate d. Keep units consistent (for example miles, miles per hour and hours).

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Substituting d equals 150 back into d equals r times t balances both sides, which checks out.