If a child has mental age of 5 years & chronological age of 4 years than what will be the IQ of child:

If a child has mental age of 5 years & chronological age of 4 years th

1.	If a child has mental age of 5 years & chronological age of 4 years than what will be the IQ of child:
A.	125
B.	80
C.	120
D.	100
Answer» B. 80