Let's assume a the age of Joe
b the age of James
a=b+10 (1)
2*(a+8)=3(b+8) (2)
==> 2*(b+10+8)=3b+24
==>2b+36=3b+24
==>b=12
==>a=12+10=22
Joe is 22 years's old
James is 12 years's old.
Step-by-step explanation:
TPC and DPC are supplementary angles so
DPC=180-123=57°
To find the percent increase you need to first find how much the price went up: 2.65 - 2.4 = .25 Now divide .25 by the original price.
Divide total distance by total time:
5 feet / 2 seconds = 2 and 1/2 feet per second.
Using the cosine function:

Solve for b: