Question

Please tell this question answer with proper solutions​

Answer 1

Step-by-step explanation:

Let the number of parents be X

In the question it is given that out of X number of parents,90 parents helped their children for half an hour to one and half hour,and 30% of X will be 90 which is 300 students. Next you can find the number of parents who don't help their children and who help their children for more than one and a half hour by doing 50% of 300 and 20% of 300 respectively.