exam
Maths Puzzle
Numerical Ability
How much pure solvent must be added to 600 ounces of 16 2/3% solvent to increase its strength to 37.5%?
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exam Other Question
Solve: v/2 – v/3 = 2
Juan is 8 years older that his sister. In 3 years, he will be twice as old as she will be then. How old is each now?