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Maths Puzzle
Numerical Ability
[52.4-(16.1/3.6] - 30.2
I don't get how to do this. / means divide
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A chemist used a portion of an acid solution containing 80 ml of an 8% acid solution and 120 ml of a 12% acid solution, and replaced it with a 10% acid solution. If the concentrati
Finding supplementary and complementary angles.
How can 174 degrees have a complementary angle?