Question

Natsumi paints walls for a living. She paints at a constant speed, and then she takes a constant amount of time to clean up.
The table compares the total area Natsumi paints (in square meters) and the time it takes Natsumi to finish painting and cleaning up (in hours).
Area (square meters) Time (hours)
30
3030
2.00
2.002, point, 00
45
4545
2.75
2.752, point, 75
60
6060
3.50
3.503, point, 50
How long does it take Natsumi to clean up after she is done?

hours

Answer 1

Answer:

Aperson earns 15 % on investment but loses 10 % in another. if the ratio of the two investments be 3: 5, what is the gain or loss on the two investments taken together