Let
be the amount of the 30% alloy and
the amount of the 60% alloy the metalworker will use. However much is used, the final alloy will have a mass of

kilograms. For each kg of the 30% alloy used, 0.3 kg is copper; similary, each kg of the 60% alloy contributes 0.6 kg, so that

Now,






1/2 of the class are 5th and 4th
1/2 of 96= 48
1/4 of 48 =12
7/9 divided by 5/6 = 14/15
in decimal for it would be 0.93
Answer: 4
Step-by-step explanation:
Answer:
10
Step-by-step explanation:
3c - 5 =2c +5
3c - 2c =5 +5
c=10