It takes you 60 seconds to walk from the first (ground) floor of a building to the fourth floor. How long will it take to walk from the first floor to the eighth floor (at the same pace, assuming that all floors have the same height). (Hint: It's not 120)
2007-02-10 03:01:12 · 15 answers · asked by unpredictedmystery 3 in Science & Mathematics ➔ Mathematics
140.
You have to ascend 3 floors to get from the first floor to the fourth floor, and 7 floors to get from the first to the eighth. 20 seconds for each floor you ascend to (60 divided by 3). 7 times 20 equals 140 seconds.
2007-02-10 03:05:53 · answer #1 · answered by marklemoore 6 · 2⤊ 0⤋
140 seconds. It will take you 20 sec for each floor. From the 1st to 4th floor is 3 sets of stairs. The 4th to 8th floor is 4 sets of stairs for a total of 7 sets of stairs at 20 seconds each is 140 seconds.
2007-02-10 03:19:20 · answer #2 · answered by Anonymous · 0⤊ 0⤋
60/3 = 20 sec /floor
To 8 floor = 7 * 20 = 140 secs
2007-02-10 03:20:31 · answer #3 · answered by Jano 5 · 0⤊ 0⤋
20*7=140
2007-02-10 03:18:39 · answer #4 · answered by Helper 6 · 0⤊ 0⤋
140
2007-02-10 03:06:15 · answer #5 · answered by Anonymous · 2⤊ 0⤋
140 (20 seconds for each floor)
2007-02-10 03:05:02 · answer #6 · answered by Anonymous · 2⤊ 0⤋
60sec/4floors = 15
15sec per floor * 8floors = 120...
WRONG
ground to 4th floor has 3 set of stairs, which means 60secs should be divided by 3 rather than 4, and the answer should be multiplied by 7stairs.
60secs/3floors = 20
20secs per floor * 7 floors = 140secs is the correct answer
2007-02-10 04:35:11 · answer #7 · answered by Curiousity killed the caT 2 · 0⤊ 0⤋
I do not like the Math Genius title
the answer is 140
2007-02-10 03:11:33 · answer #8 · answered by sm bn 6 · 0⤊ 0⤋
clearly it takes 20s to travel one floor up.
therefore the answer is 140s.
2007-02-10 03:06:26 · answer #9 · answered by Apoorv g 2 · 1⤊ 0⤋
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2016-11-03 01:51:24 · answer #10 · answered by Anonymous · 0⤊ 0⤋