Answer:
The answer is 
Step-by-step explanation:
Let,
Amount of alloy with 30% silver = x g
Given,
Amount of alloy with 10% silver = 200 g
So, Total Amount of alloy with 24% silver = (x+200) g
Now,

Hope you have understood this....
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The smallest mass of sugar for which that will be possible will be <u>30.5g.</u>
Since we're given the information that each heap contains either 27g, 45g, 30g, or 20g, then in order to calculate the smallest mass of sugar that can be divided to get equal heaps, we've to find the average of the numbers given and this will be:
= (27g + 45g + 30g + 20g) / 4
= 122g / 4
= 30.5g
In conclusion, the correct option is 30.5g.
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