Question 268665
Let day 1 = d, day 2 = 2d,and day 3 = 4d
So, we get
 {{{d + 2d + 4d = 210}}}
step 1 - combine like terms to get
{{{7d = 210}}}
step 2 - divide to get
{{{d = 30}}}
day 1 = 30
day 2 = 60
day 3 = 120