Math, asked by abby1376, 10 months ago

Steve is taking a bus to Central Park. Steve tells Alice the hour of his bus departure and he tells Annie at which minute it leaves. He also tells them both that the bus leaves between 0600 and 1000.Alice & Annie consult the timetable and find the following services between those two time: 0632 0643 0650 0717 0746 0819 0832 0917 0919 0950.Alice then says "I don’t know when Steve’s bus leaves but I am sure that neither does Annie"Annie Replies "I didn’t know his bus, but now i do"Alice responds "Now I do as well!"When is Steve’s bus?​

Answers

Answered by amitnrw
1

Steve's Bus is at 8 :32

Step-by-step explanation:

Bus timings :

06 : 32

06 : 43

06 : 50

07 : 17

07 : 46

08 : 19

08 : 32

09: 17

09: 19

09:50

Alice Do not know bus time because each hour has more than 1 timing

but Alice says Annies also does not know

if it was 6 hr then at 43 minutes Annie would have known that 6 : 43 is the bus time

hence hr is not 6

if it was 7 hr then at 46 minutes annie would know that its 7 : 46

hence hr is not 7

if it was 8 hr then  Annie could not know exact time as 19 & 32 minutes are available in different hrs

so hr can be 8

if it was 9 hr , Annie could not know exact time as 17 , 19  & 50  minutes are available in different hrs

So hr can be  9 also

now annie knows hr  is 8  or 9

19 is common in both so minute can not b 19

so bus  timing can be  8 : 32  or 9:17  or 9 : 50

but know Allice say she also knows the bus timing  

hence it must be 8 : 32   ( as in case of 9 hr there are two options so Allice would not have known exact timing if it has been 9 hr hence it must be 8 hr)

Hence Steve Bus timing is  8 : 32

Steve’s bus is at 8 :32

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