Answer:
25% sugar syrup means in a mixture of 100g sugar syrup, sugar should be 25g
so, when sugar is 25g , mixture is 100g
when sugar is 1g, mixture is 100/25 = 4g
when sugar is 15g, mixture is 15*4 =60g
So, amount of water to be added=60-15= 45g
Explanation: