SOLUTION: Twice a number added to half of itself equals 20.Find the number
Algebra.Com
Question 1192468: Twice a number added to half of itself equals 20.Find the number
Answer by math_tutor2020(3816) (Show Source): You can put this solution on YOUR website!
x = some unknown number
2x = twice the number
x/2 = 0.5x = half of the number
2x + 0.5x = adding the two previous expressions
2x + 0.5x = 20
Solving for x
2x + 0.5x = 20
(2 + 0.5)x = 20
2.5x = 20
x = 20/(2.5)
x = 8
The unknown number is 8
2x = 2*8 = 16 is the result after doubling
x/2 = 8/2 = 4 is the result after halving
Sum = 16+4 = 20 which confirms we have the correct x value.
Answer: 8
RELATED QUESTIONS
TWICE a number added to half of itself equals 20.find the... (answered by stanbon)
One-half of a number added to twice the difference of the number and 5 equals 0. Find (answered by checkley79)
Which number when doubled and added to itself equals 20... (answered by Jc0110)
if a number is added to twice itself, the result is 36 find the... (answered by rfer)
what number added to .04 of itself equals... (answered by stanbon)
How do I translate:
one-third of a number added to itself equals three times the... (answered by ewatrrr)
One third of a number added to itself equals 3times the difference of the number and... (answered by MathLover1)
What is the number increased by one-half of itself is equal to 21? Find the number which... (answered by ewatrrr)
Six times a number added to twice the reciprocal of a number equals 13. Find the... (answered by josmiceli)