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A synchronous inquiry into primary school mathematics (the first volume of grade six) Page 133 Question 4 (2) Minor problem
Sugar content is the percentage of sugar in syrup, that is, the mass of sugar divided by the mass of syrup.
First cup: 50/(250+50)= 16.7%
Second cup: 50/( 150+50)=25%
It is required that the sugar content be consistent and the actual water content be consistent. The ratio of two glasses of water is 5:3, so it is enough to add sugar in the ratio of 5:3.