SOLUTION: Please help me solve this equation.
One number is 4 plus one-half of another. The sum of the numbes is 31. Find the numbers.
I need help setting up the formula correctl
Question 411251: Please help me solve this equation.
One number is 4 plus one-half of another. The sum of the numbes is 31. Find the numbers.
I need help setting up the formula correctly, then I can solve it. It's the 1/2 that is confusing me. THANK YOU!! Found 2 solutions by ankor@dixie-net.com, sudhanshu_kmr:Answer by ankor@dixie-net.com(22740) (Show Source):
You can put this solution on YOUR website! two numbers, x & y
:
write an equation for each statement
:
"One number is 4 plus one-half of another."
x = y + 4
get rid of the fraction, multiply by 2 and you have:
2x = y + 8
:
"The sum of the numbers is 31. "
x + y = 31
y = (31-x); use this for substitution
You can put this solution on YOUR website! let numbers are x and y.
according to question x+y = 31 .......(1)
and
x = y/2 + 4 ...................(2)
now, from (2) x-4 = y/2
=> 2x - 8 = y
from (1)we find y = 31-x
compare both value of y...
2x-8 = 31-x
=> 2x + x = 31+8
=> 3x = 39
=> x = 13
y = 31-13= 18
so, numbers are 13 and 18 .
there are many ways to solve this problem, understand the concept and try to solve it yourself.......
