The decrease was 3. (from 30 down to 27)
Always calculate the decrease as a percent of the ORIGINAL number.
3/30 = 0.1
To change a decimal to a percent, move the point 2 places that way ==> .
0.1 = 10% .
When you go from 30 to 27, that's a decrease of 10% .
(972.41 + 1,620) =
2592.41
2592.41 ×
=
51.8482
So, that means that your answer would have to be:
51.8482Just change "
" to
0.02 and by the way lineup the decimals and do P.E.M.D.A.S
:)