Question

If the chronological age of the child is 60 months and his mental age is 66, his IQ is
a. 90
b. 100
c. 110
d. Cannot be determined

Answer 1

general formula of IQ is = mental age ÷chronological age×100

iq= 66÷60×100

divideing noth the sides by 100
we get,


iq÷100=66÷60

iq=(66÷6)10

iq= 110

"c" is the correct answer

Answer 2

Answer:

Correct answer to the question is option (c) 110.

Explanation:

It is given that,

Chronological age of the child (CA) is 60 months.

Mental age of the child (MA) is 66 months.

Intelligent Quotient IQ = MA / CA * 100

IQ = 66/60  * 100

IQ = 110

So, Intelligent Quotient IQ of the child is 110.

Hint:

Chronological age is the actual age that is calculated based on date of birth.

Mental age is calculated based on one's intelligence.

Hope it helps.