state gov AP Police SI (Pre+Mains) Mock Test 2022 Quantitative Aptitude Ratio and Proportion Simple Ratios
In what ratio should 20% ethanol solution be mixed with 40% ethanol solution to obtain a 28% ethanol solution?
1
2 : 3
2
8 : 5
3
3 : 2
4
5 : 8
In what ratio should 20% ethanol solution be mixed with 40% ethanol solution to obtain a 28% ethanol solution?