A person with a mental age of 13 and a chronological age of 20 has an IQ of 104.104. What is the chronological age of a person with a mental age of 25 and an IQ of 100

Chronological ageC=40

Step-by-step explanation:

The IQ = Q varies directly as a persons metal age M and inversely as the person's chronological age C.

Mathematically it is written as Q=kM/C

Where M = mental age and C = chronological age

Q = 104.104 = 13k/20

Cross multiply

104.1 * 20 = 13k

2080.2 = 13k

K = 2080/13

K=160

Rewriting the equation to : Q = 160M/C

Q=160*25/C

100=4000/C

Cross multiply

100C=4000

C = 4000/100

C = 40