Answer: 38 Videos
Step-by-step explanation:
Add Vikki’s and Chris’s videos (131+80=211)
If they rented 173 more than the average couple you need to subtract Vikki’s and Chris’s amount from 173 (211-173=38)
That will give you the average videos other couples rent
7×20 and 7×2000 are similar. The amount of zeros are the dependent factor.
7×20= 140
7×2000= 14000
The base equation is 7×2=14
Any additions of zeroes in this formula will be added at the end result.
Ex.
7×2=14
7×20=140
7×200=1400
70×200=14000
700×200=140000