exam
Maths Puzzle
Numerical Ability
What quantity of 60% acid solution must be mixed with 30% solution to produce 300mL of a 50% solution?
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exam Other Question
The number of milligrams of a certain substance per liter in samples of drinking water all tested within .05 of 40 milligrams per liter. Write this information as an inequality, us
Perform the indicated operation
-2a^2/3a^2 times 20a/15a^3