Question

FS Math FS LV2 Volume Problems Q1. The swimming pool is in the shape of a cuboid 20 metres long and 8 metres wide. It is filled with water to a depth of 1.8 metres. Diagram not accurately drawn 1.8m 8 m 20m Charles needs to add chlorine powder to the water in the pool to keep the water clean. Each week Charles needs to use 300 grams of chlorine powder per 50 m of water. Chlorine powder is sold in boxes. Each box contains 5000 grams of chlorine powder. Charles thinks that one box will be enough for 4 weeks. Is one box enough for 4 weeks? Show why you think this.
pls answer
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Answer 1

From the volume computed, since each box contains 5000 grams of chlorine powder, it won't be enough for 4 weeks.

How to calculate the volume

The volume of the swimming pool water will be:

= length × width × height.

= 20 × 8 × 1.8

= 288m³

Since 50m³ of water chlorine needs 300gm, therefore, 1m³ will need;

= 300/50 = 6

Therefore, 288m³ will need:

= 288 × 6 = 1728gm

The amount of chlorine powder needed for 4 weeks will be:

= 1728 × 4

= 6912 gm

Since each box contains 5000 grams of chlorine powder, it won't be enough for 4 weeks.

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