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

the final amount you will pay is $68.04.

the tip is determined by the pre-tax amount, so we calculate the tip based on the original bill, not after we've added sales tax.

to find the tip:

we can divide 54.00 by 100 to get 1% of 54. then we multiply that by 18.

54 / 100 = .54

.54 x 18 = 9.72

tip = 9.72$

to find the tax:

we can divide 54.00 by 100 to get 1% of 54. then we can multiply that by 8 to get 8%.

54 / 100 = .54

.54 x 8 = 4.32

tax= 4.32

now we can add the tip and tax to the bill to get our total.

54 + 9.72 + 4.32 = 68.04

total: $68.04

step-by-step explanation:

answer:

a=9

step-by-step explanation: lmk if you need a explanation