Mathematics, 07.10.2021 18:50 lolirdc

#18: A beauty supply company received an order from a salon for 42 liters of 28% hydrogen peroxide. The company is out of 28% peroxide, but they can make some by mixing 20%
hydrogen peroxide and 30% hydrogen peroxide, both of which they have. How much of each
substance should be mixed together to fill the order?

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