Duplicate Question
The question on this page has been marked as a duplicate question.
Original Question
In Mrs Halls class of 30 students, 17 have computers at home and 20 have cassettes. If 4 students in the class have neither a c...Asked by stacey
in a class of 30 students, 17 have computers at home and 20 have cassettes. If 4 students in the class have neither a computer or a cassette, how many of the 30 students have both?
Answers
Answered by
Steve
If you count all the students with computers, and then count all those with cassettes, you count twice the ones that have both. So, adjust the total accordingly.
30 students. 4 with nothing, leaves 26 with either computer or cassette or both
17+20 = 37, but there are only 26 students available, so there must be 37-26=11 with both. Just adding up the numbers counted 11 of them twice.
30 students. 4 with nothing, leaves 26 with either computer or cassette or both
17+20 = 37, but there are only 26 students available, so there must be 37-26=11 with both. Just adding up the numbers counted 11 of them twice.
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.