Question

A charitable coaching institute for poor children is imparting coaching for engineering
entrance examination on three afternoons. The table below shows the number of
candidates attending the same:
Days
1st day only 1st day 2nd day 3rd day 15 & 2nd days 2nd & 3rd days
No of candidates 60
100
46 30
23
1st & 3rd days
70
28
1 Find the number of candidates who
attended on all the three days ?
2 What percent of the candidates
attended on any one day only ?​

Answer 1

Answer:

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