Tim can paint three 10 ft. by 12 ft. walls in 4 hours. he has to paint his house, and it has 9 walls this size that need to be painted. if he starts at 10: 00 a. m., about what time will tim finish?
a. 9: 00 p. m.
b. 9: 30 p. m.
c. 10: 00 p. m.
d. 10: 30 p. m.

C. 10:00 p.m.

Step-by-step explanation:

Since it is given that Tim is taken 4 hours time to complete painting in 3 walls.

Thus, time taken to complete painting in one wall is: hours

No, Tim has to complete painting in 9 walls.

Thus time taken to complete painting in 9 walls =

Also since he start his work at 10:00 a.m.

So he has to work till 10:00 a.m. + 12 hours = 10:00 p.m.

Hence Option C is correct.

the ratio of balloons to tables is 5: 2 and the constant variation is 5.

the equation is y=5x