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16. Five mark exercise problems IV

$1500$ families were surveyed and following data was recorded about their maids at homes.

Types of maids	Only part time	Only full time	Both
Number of families	$860$	$370$	$250$

A family is selected at random. Find the probability that the family selected has:

(i) Both types of maids

$=$

$\frac{i}{i}$

(ii) Part time maids

$=$

$\frac{i}{i}$

(iii) No maids

$=$

$\frac{i}{i}$

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