Answer:
For this question, x = 16
Step-by-step explanation:
x/20 = 4/5
if we cross multiply, we will have
x × 5 = 4 × 20
5x = 80
x = 80/5
x = 16
16 x 10 x 12 = 1,920
The jewelry store received 1,920 rings
Hope this helps. :)
The answer is n=(a-b)-1 because when you subtract a-b, you get almost the number of pages, but as you are counting the page b which has is not torn out, you must subtract 1 to get the correct answer if you plugged in a variable
