Question

Darius buys a bottle of a chemical solution that contains 70% percent alcohol. The bottle contains 500 milliliters of solution.
How many milliliters of alcohol are in the solution?

Answer 1

70%of 500
70/100×500
35 millilitres
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Answer 2

the amount of alcohol in the solution is
=500-(500×70/100) mm
=500-350 mm
=150 mm
hope it helps