Question

A particular beach is eroding at a rate of 4 centimeters per year. A realtor converts this rate to millimeters per day. Which expression, when evaluated, results in the correct units and numerical value?

Answer 1

GivEn :

• Eroding rate = 4 cm/year

• Rate is converted to mm per day by realtor!

To find :

• Any Expression formed, though on evaluation gives the correct units as well as numerical values = ?

SoluTion :

This is a conversion based question, so all you need to know is about the conversion itself !!

As it given that,

A particular beach is eroding at a rate of 4 cm/year.

We know that,

$:\implies \sf \: \: 1 \: cm = 10 \: mm$

Similarly,

$:\implies \sf \: \: 4 \: cm = 40 \: mm$

Now,

$:\implies \sf \: \: 4 cm/year = 40 mm/year$

$:\implies \sf \: \: \dfrac{40}{365} \: mm/ \: days \: \: \: \: \: [As \: 1 \: year = 365 \: day's]$

Hence, option [B] is the answer! [As it correctly describes each and every conversion according to the given conditions. ]

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