A hotel cleaner takes 8 hours to vacuum 72 rooms. At this rate, how
long does she take to vacuum 45 rooms?
Answers
Answered by
4
Total number of rooms = 72
Total time = 8 hours
Per hour, how many rooms will get cleaned?
==> 72/8 = 9 rooms
For 45 rooms,
9:1 :: 45:x
45:5 :: 9:1
Hence, it will take 5 hours.
Hope you found this helpful :)
Answered by
0
Answer:
0.2 hours
Step-by-step explanation:
INVERSE PROPORTION
TIME - 8 | x
ROOMS- 72 | 45
8/72 × x/45
72 × x/8 ×45
cancel 72 by 8=9
cancel 9 by 45=0.2
it will take 0.2 hours for her to vacuum 5 rooms
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