Question

One grain of this sand approximately weighs 7 x 10 -5^ g.

B.) How many grains of sand are there in 6,300 KG of sand?

Give your answer in standard form.

Answer 1

Answer:

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Answer 2

90000000000 grains of sand are there in 6300 kg. of sand.

• The unitary technique involves first determining the value of a single unit, followed by the value of the necessary number of units. Always write the items that need to be computed on the right side and the things that are known on the left side to simplify things.
• In the unitary method, the value of a unit quantity is determined before the values of other units are determined. Direct variation and inverse variation are the two different sorts of variations it has.
• When there is a direct variation, an increase or decrease in one quantity will result in an equivalent rise or fall in the other. For instance, a rise in the quantity of commodities will result in higher costs.

Here, according to the given information, we are given that,

One grain of this sand approximately weighs 7 × $10^{-5}$ g.

Now,  

6300 kg = 6300000 g.

Then, number of grains in 6300 kg. of sand = $\frac{6300000}{7.10^{-5} } = \frac{630000000000}{7} =90000000000.$

Hence, 90000000000 grains of sand are there in 6300 kg. of sand.

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