Chemistry

Question

A car moves with an average speed of 45miles /hour. How long does the car take to travel 90miles?

2 Answer

  • Averqge speed of the car = 45 miles/hr, which means,

    The car travels 45 miles in 1 hr.

    Using unitary method,

    The car travels 45 miles in 1 hr

    The car would travel 1 mile in 1/45 hrs

    The car would travel 90 miles in 1/45×90 hrs

    So, calculating this,

    1/45×90 = 2 hrs

  • Answer:

    actually this is physics

    d=s×t

    ∴45×90⇒4050km

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