# In a primary school the parents were asked about the number of hours they spend per day in helping their children to do homework. There were 90 parents who helped for     to     hours. The distribution of parents according to the time for which they said they helped is given in the adjoining figure; 20% helped for more than    hours;  30% helped for      hour to      hours; 50% did not help at all.Using this, answer the following :(ii) How many said that they did not help?

from the previous question number of parents surveyed X = 300.

Given, 50% did not help.

Therefore, number of parents that did not help = 50% of 300 = 150.

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