20 tonnes of a mixture
of sand and gravel is
30% Sand. How many tonnes
of sand must be a...
Mathematics, 10.03.2021 07:40 milkshakegrande101
20 tonnes of a mixture
of sand and gravel is
30% Sand. How many tonnes
of sand must be added
to produce
a mixture which is 40%gravel?
Answers: 3
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