Riddles
Go to...
Index
Translations
Pronunciation
Images
Computers
Geography
Languages
0 / 60 seg.
John bought a used car for $600 and sold it to Mary for $800. He later bought it back for $1000 and resold it for $1200. How much profit did John make?
$
4
0
0
.
H
_
M
_
D
_
_
P
R
_
F
_
T
_
F
$
2
0
0
_
_
C
H
T
_
M
_
H
_
S
_
L
D
T
H
_
C
_
R
Clue
20 TIMES. THEY ARE 9, 19, 29, 39, 49, 59, 69, 79, 89, 99 (2 TIMES) FOLLOWED BY 90, 91, 92, 93, 94, 95, 96, 97, 98
IT WOULD TAKE 5 MINUTES. EACH MACHINE TAKES 5 MINUTES TO MAKE ITS WIDGET. THEREFORE, EACH OF THE 100 MACHINES WOULD HAVE FINISHED MAKING ITS WIDGET IN 5 MINUTES
1ST METHOD: 7⁄.7 X 7⁄.7 2ND METHOD: 77⁄.77
$400. HE MADE A PROFIT OF $200 EACH TIME HE SOLD THE CAR
Text
Audio
Text & audio
Free text
Multiple option
Previous question
Start
Next question
Please enable JavaScript to continue using this application.