10upon 1/2tonnes of sand are to be shared between a number of builders.One of them receives 4/710 upon 1/2 tonnes of sand are to b of the total and the remaining sand is shared by 3 builders.How much does the fourth builder receive and how much sand does each of the other 3 builders receive?

10upon 1/2tonnes of sand are to be shared between a number of builders

1.	10upon 1/2tonnes of sand are to be shared between a number of builders.One of them receives 4/710 upon 1/2 tonnes of sand are to b of the total and the remaining sand is shared by 3 builders.How much does the fourth builder receive and how much sand does each of the other 3 builders receive?
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