SOLUTION: Four less than two-fifths a number is 24. Find the number

Algebra ->  Equations -> SOLUTION: Four less than two-fifths a number is 24. Find the number      Log On


   

Question 166854: Four less than two-fifths a number is 24. Find the number
Found 2 solutions by Mathtut, jojo14344:
Answer by Mathtut(3670) About Me  (Show Source):
You can put this solution on YOUR website!
call the number x. 2/5(x)-4=24---->2/5(x)=28--->multiply by 5
2x=140----highlight%28x=70%29

Answer by jojo14344(1513) About Me  (Show Source):
You can put this solution on YOUR website!
It follows:
4-%282%2F5%29x=24, EQN 1
Continuing,
-%282%2F5%29x=24-4=20
-2x=5%2A20=100, cross multiply
cross%28-2%29x%2Fcross%28-2%29=cross%28100%2950%2Fcross%28-2%29
highlight%28x=-50%29
check via EQN 1;
4-%282%2F5%29%28-50%29=24
4%2B%28100%2F5%29=24
4%2B20=24
24=24
Thank you,
Jojo