radha could not solve 1/9th questions of an exercise in mathematics,1/10th of the problems solved by her wrong.i f there were 90 questions in the exercise,how many problems did she answer correctly.
Answers
Answered by
4
radha could not solve 1/9
1/9×90=10
90-10=80
wrong = 1/10
1/10×80=8
so she answered 80-8=72 questions correctly
1/9×90=10
90-10=80
wrong = 1/10
1/10×80=8
so she answered 80-8=72 questions correctly
Similar questions