Question

after a 7% increase in salary,laurie makes $1647.80 per month.how much did she earn per month before the increase ?

last problem .. thanks a lot

Answer 1

1.07x=1647.8
x = 1540

Answer 2

Since the percentage difference is an INCREASE, we take that $1647.80 is some other value (say 'x') multiplied by 1.07.
So, 1.07x = 1647.8
x = 1540

If it was a DECREASE, then the value would be 0.07 less than the original, ie:
0.93x = 1647.8

Hope that helps with the understanding of it :)

Answer 3

thanks a lot ♥ .. God bless