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
Please help me.
use the subtraction method to solve for s.
3t+5s=10
3t+ s=2
&
4s-5t=7
2s-5t=3
solve 2/5x -6=12