Step-by-step explanation:
Just expand it:

:)
Answer:
Why is 3 x 1/10 less than 3 x 10
Since is 3 x 1/10 = 3/10 and
3 × 10 = 30, and
30 > 3/10
Step-by-step explanation:
Percent change formula states that
((New-old)/old) x 100 = the percent change / percent increase
So if we take your equation and plug it into our formula
((225-120)/120) x 100
(105)/120 x 100
.875 x 100
87.5 % increase of students on the trip
Hope this helps!