Answer:
The amount of carpet needed in Room Z should be the same as the carpet needed in both Room X and Room Y.
Step-by-step explanatio
2•10+5•3
10•3
35/30*5 ( do it on both sides )
you'll get 7/6 or 1 1/6
She walks 70 hours in total 10 20 and 40
The answer would be 362 miles
add the number of miles from day one and day two