Sales: Ye has his own business he checks sales receipts three times a day One day his afternoon sales were $50 more than his morning sales and his evening sales were three times this afternoon so if his total sales for the day were $1000 what were his evening service

Call the morning sales x.

This means:

- The afternoon sales are x + 50.

- The evening sales are 3 (x + 50) = 3x + 150

Now we can calculate x knowing the total sales:

Total sales = morning + afternoon + evening

1000 = x + x + 50 + 3x + 150

800 = 5x

x = 160

We are asked for evening sales, so let's plug are value for x into the evening expression:

evening = 3x + 150 = 3 (160) + 150 = $630