A container holds 4 quarts of chemical and 4 quarts of water.How many quarts of water must be added to the container to create a mixture that is 3 parts chemical to 5 parts water by volume?

A 4/5

B 5/3

C 7/3

D 8/3

Solution

Correct Answer: Option D

মনে করি , মিশ্রণটি x quarts পানি মিশালে কেমিক্যাল ও পানির অনুপাত 3:5 হবে
প্রশ্নমতে ,4/(4+x)=3//5
            বা, 12+3x=20
             বা, 3x=8
             বা, x=8/3

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