EMQPWE
08.07.2020 •
Mathematics
How much water should be added to 120 oz. of 50% acid solution to dilute it to a 30% acid solution? Round your answer to the nearest hundredth if necessary.
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Ответ:
Step-by-step explanation:
120oz=50%acid
y=30%acid
120×30%=36
50×y=36
1.889oz
Ответ:
let x feet be the highest of the boxes , and y be the number of boxes.
the answer is coming as 15 feet for 20 boxes and 12 boxes to reach the ceiling of 9 feet high