2 years ago

Bob the builder is making 480 kg of concrete mix

Mathematics

2 answers:

Marina CMI [18]2 years ago

6 0

Answer:

180 kg

Step-by-step explanation:

The ratio is

cement : sand : gravel

1 : 3 : 4

If he used 1 kg cement, 3 kg sand, and 4 kg gravel, he'd get 8 kg of concrete.

He wants to make 480 kg of concrete.

480/8 = 60

He needs 60 times more concrete than the numbers in the ratio.

60 * 3 kg = 180 kg

Answer: 180 kg

svetoff [14.1K]2 years ago

4 0

Answer:

If sand is 3 in the ratio, it is 180kg

Step-by-step explanation:

480/8=60 60 times 3 is 180

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