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Question 29
Max
Bob buys a bike on 15th March, 2016 (Tuesday). He is asked to bring the bike for servicing after 30 months.
Determine the day of the week on which the bike needs to be brought in for servicing.
Note All months have 30 days.
Saturday
Friday
onday
of these​

Answer 1

Given : Max  Bob buys a bike on 15th March, 2016 (Tuesday). He is asked to bring the bike for servicing after 30 months.

To Find : Determine the day of the week on which the bike needs to be brought in for servicing.

Solution:

15th March, 2016  (Tuesday)  

After 30 months

15th Sep, 2018  

March in 2016 hence February  has already gone

2017 and 2018 are not leap year

a non leap year has 365 days = 52 * 7 + 1

Hence  15th March, 2018  =  Tuesday +  2 * 1

= Thursday  

Now from 15 March  to 15 sep

Days in March = 31 - 15 = 16

April = 30 , May = 31 , June = 30 , July = 31 , August = 31

Sept = 15

Total = 154

184 = 26 * 7  + 2

Hence Day on  15th Sep, 2018  = Thursday  + 2

= SATURDAY

Hence day of the week on which the bike needs to be brought in for servicing is SATURDAY

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