AboutJohn Zalewski Expertise I can help you solve problems involving fractions, decimals, ratios, and algebra. I can teach you how to do math faster, and even in your head. I can teach math definitions, and help you study, if necessary. Please do not ask any graphing, trigonometry, or calculus questions. Try to work through homework questions before asking for assistance.
Experience I routinely process numbers of all kinds in my head, without need of a calculator.
Education/Credentials I was an A math student while in high school.
Expert: John Zalewski Date: 6/28/2008 Subject: word problem
Question Nathan has 2 brothers, conner and josh. If we add 2 to conner's age, it is exactly 1/2 the age of their older brother josh, who is 12. How old is conner? How many years will it be until conner's age is 1/2 josh's age?
Answer Hello, Viola.
Nathan = N
Conner = C
Josh = J
2 + C = 1/2(12) (2 + Conner's age = 1/2 Josh's age.)
2 + C = 6 (12 x 1/2 = 6.)
C = 4 (Conner is 4 years old.)
4 + x = (12+x)1/2 (Conner's age + unknown amount of years = Josh's age + same amount of unknown years x 1/2)
4 + x = 6 + 1/2x (Distribute 1/2 through parentheses.)
2 = 1/2x (Subtract 4 from both sides; subtract 1/2x from both sides.)
