exam
Maths Puzzle
Numerical Ability
How many liters of water must be added to 50 liters of a 30% acid solution in order to produce a 20% acid solution?
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exam Other Question
Is this correct?
An 800 g solution of acid and water contains 128 g of acid. What percent of the solution is acid? 16%
Is it possible to find a sequence with the rule add 7 for which
all the terms are multiples of 7
all terms are multiples of 5
all terms are even numbers
every 7th terms is a prime number
Please could I have an example