In a class of 30 children 40% are girls. How many more girls coming to this class would make them 50% ?
A4
B3
C8
D6
Answer:
D. 6
Read Explanation:
Total students = 30
Girls = 40% of 30 = 12
Boys = 30 - 12 = 18
When 6 more girls coming to the class , num of girls = 18
That is equal to 50% of total strength of the class
Total strength will be 36
(18 boys + 18 girls)
