Bugsytherooster Bugsytherooster

26-05-2014
Mathematics

Answered

To make concrete it takes 8 parts crushed gravel, 7 parts water and 5 parts cement mix. A worker needs to make 220kg of concrete. How much crushed gravel, water and cement mix is needed?

Thanks!!!

Answer :

26-05-2014

a) 8 + 7 + 5 = 20 parts
b) 220 kg ÷ 20 = 11
c) 8 parts crushed gravel: 8 x 11 = 88 kg
7 parts water: 7 x 11 = 77 kg
5 parts cement: 5 x 11 = 55 kg

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