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Maths Puzzle
Numerical Ability
How many litres of 20% solution must be added to 88l of 59% salt solution to obtain a 42%salt solution?
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Given the Points (-3,-3),(5,4),and(7,5)
1. Graph the points
2. Draw a line parallel to the given line and write its equation
3. Draw a line perpendicular to the given line that
The rate r at which a disease spreads in a population of size P is jointly proportional to the number x of infected people and the number P-X who are not infected. An infection er