Katie is teaching a class of thirty pupils, of which fourteen are girls. She knows that there are twenty-two pupils who are right-handed.
What is the minimum number of girls who are right-handed in this class?
There can be a minumum of 6 right handed girls.
30 pupils - 14 girls = 16 boys
If all the 16 boys were righ-handed, then:
22 - 16 boys = 6 girls - which would the minimum number of girls who are right-handed.