College

We appreciate your visit to Bob the Builder is making 560 kg of concrete mix Concrete is made by mixing cement sand and gravel in the ratio tex 1 3. This page offers clear insights and highlights the essential aspects of the topic. Our goal is to provide a helpful and engaging learning experience. Explore the content and find the answers you need!

Bob the Builder is making 560 kg of concrete mix. Concrete is made by mixing cement, sand, and gravel in the ratio [tex]1: 3: 4[/tex].

How much sand does he need?

Answer :

To find out how much sand Bob needs to make the 560 kg of concrete mix, we need to use the given ratio of cement, sand, and gravel, which is [tex]\(1:3:4\)[/tex].

Here's a step-by-step solution:

1. Understand the Ratio:
- The ratio [tex]\(1:3:4\)[/tex] means for every 1 part of cement, there are 3 parts of sand and 4 parts of gravel.
- Total parts in the ratio = [tex]\(1 + 3 + 4 = 8\)[/tex].

2. Calculate the Weight of Each Part:
- Since the total concrete mix weighs 560 kg, each part of the mix would contribute a portion of the total weight.

3. Determine the Weight of Sand:
- Sand is represented by 3 parts in the ratio.
- The weight of sand can be calculated by distributing the total weight according to the ratio:
[tex]\[
\text{Weight of sand} = \left(\frac{\text{Parts for sand}}{\text{Total parts}}\right) \times \text{Total weight of concrete mix}
\][/tex]
[tex]\[
\text{Weight of sand} = \left(\frac{3}{8}\right) \times 560 = 210 \text{ kg}
\][/tex]

Therefore, Bob needs 210 kg of sand for his concrete mix.

Thanks for taking the time to read Bob the Builder is making 560 kg of concrete mix Concrete is made by mixing cement sand and gravel in the ratio tex 1 3. We hope the insights shared have been valuable and enhanced your understanding of the topic. Don�t hesitate to browse our website for more informative and engaging content!

Rewritten by : Barada