BDMO NATIONAL JUNIOR 2012/03

Discussion on Bangladesh Mathematical Olympiad (BdMO) National
Math Mad Muggle
Posts: 29
Joined: Mon Jan 23, 2017 10:32 am
Location: Rajshahi,Bangladesh

BDMO NATIONAL JUNIOR 2012/03

Unread post by Math Mad Muggle » Mon Feb 06, 2017 10:08 am

plz, give me solution with explanation.....
Attachments
Screenshot_2017-02-04-21-52-32-1.png
Screenshot_2017-02-04-21-52-32-1.png (33.52 KiB) Viewed 356 times

SMMamun
Posts: 49
Joined: Thu Jan 20, 2011 6:57 pm

Re: BDMO NATIONAL JUNIOR 2012/03

Unread post by SMMamun » Mon Feb 06, 2017 8:24 pm

One of the three cases will happen each day:
Rainy morning, Clear afternoon
Clear morning, Rainy afternoon
Clear morning, Clear afternoon

Right?

Can you now assign variable(s) to the no. of days in each case and relate the variables with 11, 16 and 13 in some equations?

aritra barua
Posts: 48
Joined: Sun Dec 11, 2016 2:01 pm

Re: BDMO NATIONAL JUNIOR 2012/03

Unread post by aritra barua » Wed Feb 22, 2017 2:41 pm

Let,the total days needed by Tanvir be M1+E1,where M1 denotes the total number of mornings and E1 denotes the total number of evenings.Now,without rain,M1+E1=29.........(1),again with rain,M1+E1=11.........(2);By adding (1) and (2)..we get M1+E1=20;therefore,the total number of days to climb the mountain will be 20.

thczarif
Posts: 8
Joined: Mon Sep 25, 2017 11:27 pm

Re: BDMO NATIONAL JUNIOR 2012/03

Unread post by thczarif » Fri Dec 08, 2017 1:56 pm

is it 20 days?

thczarif
Posts: 8
Joined: Mon Sep 25, 2017 11:27 pm

Re: BDMO NATIONAL JUNIOR 2012/03

Unread post by thczarif » Fri Dec 08, 2017 2:02 pm

let x be the number of days in which it rained in morning and y be in the afternoon
then 16+x=13+y and x+y=11
by calculating these equations we find x=4 and y=7.so total day is 20

Post Reply