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a chemist has two alloys, one of which is 10% gold and 15% lead and the other of which is 30% gold and 40% lead. how many grams of each of the two alloys should be used to make an alloy that contains 60

asked Jul 22, 2017

Mathematics
high-school

1 answer

1 vote

229k views

Write a pair of numbers such that the value of the 7 in the first number is 1000 times the value of the 7 in the second number and the value of the 3 in the first number is 100 times the value of the three

asked Feb 27, 2017

Mathematics
middle-school

1 answer

5 votes

93.3k views

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