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Maths Puzzle
Numerical Ability
3m-7=-7-4m-m
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Can you please help me with the following problem:
How do you find the least common multiple (LCM) for the following group of numbers? 12, 20, and 35.
Can you break down your answer so I will be able to understand?
Thanks!
a chemist has one solution that is 60% chlorinated and another that is 40% chlorinated. How much of each solution is needed to make a 100 L solution that is 50% chlorine?