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Six coins of equal weight, made of gold and silver are melted together and recast. The ratio of gold and silver in one of these is 2 : 1, in two other it is 3 : 5 and in the remaining 7 : 5. In the new coins the ratio of gold and silver is
$12 : 11$
$1 : 1$
$19 : 17$
$42 : 25$

1 : 1

42 : 25

19 : 17

12 : 11

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Six coins of equal weight, made of gold and silver are melted together and recast. The ratio of gold and silver in one of these is 2 : 1, in two other it is 3 : 5 and in the remaining 7 : 5. In the new coins the ratio of gold and silver is
$12 : 11$
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