Apurse was reduced to 30.00 the sales price was 90.00 what was the original price

Hello! $30 is subtracted from the original price and the sales price is $90. To find the original price, all you have to do is add the numbers together, because adding the numbers in reverse can bring us to the original number. 90 + 30 is 120. There. The original price was $120.

You can check it by solving it in your head.  They are separating at the rate of 55-40 or 15 miles per hour.  So in 1 hour or 60 minutes they'll be 15 miles apart, so in 20 minutes they'll be 5 miles apart, so in 40 minutes they'll be 10 miles apart.  So it has to be 40 minutes.

Step-by-step explanation:

55t-40t=10

15t=10

15t/15=10/15

2/3

40 Minutes