Monday, January 26, 2009

BraiNStORm > 2



Here's the scenario....

There are two Painters...
Painter A can paint a house in 3 hours
Painter B can paint a house in 5 hours

If

Painter A & Painter B  paint the same house,
 at the same time, 
how long will it take to finish painting it?

happy brainstorming!!


19 comments:

kEyNAh said...

2 hours i guess..
hehe..
tu pun klau painter B x menyusahkan painter A smpai kena buat keja lama2..

Muhammad Anas bin Kamarudin said...

(3+8)/8 eh?

how did you know?..

sorry...
try again... good try
:P

the answer needs a little maths..

uisdfyt89 said...

1 7/8 hours???

kEyNAh said...

owh.. math ke..
kalau ikut logik cmne??
painter a wat kje 3 jam..
painter b 5 jam..
klau cat umah yang sama(gotong-royong) pada waktu yang sama..
painter b mampu siapkan kurang dari 3 jam coz painter b pun cat gak..tempoh mereka berdua pasti kurang dari 3jam..
he3~
'secara logiknya'

Muhammad Anas bin Kamarudin said...

memang la kurang 3 jam... tapi nak jawapan yang tepat... how long...

>> uisdfyt89 <<
how did you get that answer??

-nil- said...

emmm...
1 hour 40 minutes...
right??

Muhammad Anas bin Kamarudin said...

ok... maybe it was my fault..

i'd like an answer, and the logic behind the answer, how the answer was obtained....

amaraman said...

i would say about two hours. in one hour painter A would have painted 1/3 of the house while painter B 1/5 of the house. so together in two hours they would have painted 16/15 of the house(we could assume the extra 1/15 as the lawn.huhu)

anwar azhari said...

damn!!

this is such a diff question.

but not 4 d SPM mathematics top scorer.

its exactly 1 hr and 52 min 30 secs

hahaha

ak tibai jer..

Muhammad Anas bin Kamarudin said...

ammar.. you're on the right track there... but we're only concerned on the house... there is no lawn... how much less than 2 hours?

TepT... of coz it's diff.. that's why i posted it.. huhu.. nice guess... but sorry to say, try again...

manki said...

cukup sng jawapannya...cuma aku tidak dpt memberitahu selagi zafran tidak menyatakan jawapannya

zafran said...

sayalah pengasas soalan ni..

Muhammad Anas bin Kamarudin said...

sorry TepT... betul jawapan ko...
1 hour 52 minutes 30 seconds

Muhammad Anas bin Kamarudin said...

Cangratulations to TepT!!!

Muhammad Anas bin Kamarudin said...

Congratulations to uisdfyt89 too!... the 1st to get the answer actually, cuma jwpan dia dlm friction... x prasan the 1st time

amaraman said...

15/8 = 1.875 hours = 1 hour 52 min 30 sec

damnit..pehal aku x kira tol2 tadi.

anwar azhari said...

ahahaaa..

=D>

tq2..

2 d one whos ansd in friction, u got exactly d same idea as i did,

bt we dunt look at our watch by friction, i mean, in minute friction.

but anyway..

congratulations to evrybody..

=)

Anonymous said...

yg ni punye blh thnla, tp yg brainstorm 1 tu mmg blur..

Muhammad Anas bin Kamarudin said...

huhu... yeah the 1st is very challenging... mmg respect rr sape leh jawab sendiri...