A chemist was preparing a solution that should have included 35 milligrams of chemical . If she actually used 36.4 milligrams,what was her percentage error ( to the nearest 0.01)?

A chemist was preparing a solution that should have included 35 milligrams of chemical . If she actually used 36.4 milligrams,what was her percentage error ( to the nearest 0.01)? Correct Answer 4.00%

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দুটি সংখ্যার অনুপাত ৪ঃ৭ প্রত্যেকটির সাথে ৪ যোগ করলে তাদের অনুপাত দাঁড়ায় ৩ঃ৫; ছোট সংখ্যাটি কত?
কঃখ =৩ঃ৫, খঃগ =৪ঃ৭, হলে, কঃগ = কত?
তিনজনের মধ্যে ৭৫০ টাকা ৩ঃ৫ অনুপাতে ভাগ করে দিলে ভাগের টাকার অংশগুলো হবে-
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