Bob the builder is making 480 kg concrete mix. Concrete is made by mixing cement, sand and gravel in the ratio 1:3:4 how much sa
2 answers:
Answer:
Bob the builder need 180 kg sand.
Step-by-step explanation:
The amount of concrete mixture is 480 kg. It is given that concrete is made by mixing cement, sand and gravel in the ratio 1:3:4.
Let the amount of cement, sand and gravel in concrete mixture be x, 3x, 4x respectively.
Divide both sides by 8.
The amount of sand is 3x, so
Therefore bob the builder need 180 kg sand.
You might be interested in
Try this option:
or -2ctg²x
or -2ctg²x