jefferyt681 jefferyt681

05-08-2020
Mathematics

contestada

Laura has a step of 50cm She walks along by taking two steps forward and one step back. What is the least number of steps counting forward and backwards step, she takes to reach a step 20m away? ~Thanks - don't know how to solve :(

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salatulmaghrib salatulmaghrib

05-08-2020

If she moves two steps forward and one step backward, she ends up traveling forward by the distance of one step: 50cm.

So, she took three steps to travel 50cm.

20m = 2000cm
2000cm/50cm = 40
She will have to do her three steps forty times to reach 20m. Thats a total of 120 steps.

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shalayanicole shalayanicole

09-09-2020

The answer is Laura walked 20cm to 50cm

Answer Link

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