Posted by **jo** on Saturday, August 20, 2011 at 5:45am.

60% of the people on a bus are male. After 1/3 of the males alighted from the bus, what percentage of the people left on the bus are females?

- Maths -
**bobpursley**, Saturday, August 20, 2011 at 11:51am
Hmmmm. Alighted? My Lord, were they flying?

Anyway, 1/3 of 60 percent is 20 percent, so on the bus remains 40 percent male and 40 percent female

PrecentMaleThere= 40/80=50 percent

- Maths -
**Henry**, Saturday, August 20, 2011 at 8:23pm
X = The # of people on bus.

0.6X = The # of males on bus.

(1/3) * 0.6X = 0.2X = The # of males exited bus.

0.6X - 0.2X = 0.4X = The # of males

remaining on bus.

X - 0.2X = 0.8X = The # of people on bus.

%Male = 0.4X / 0.8X = 0.5 = 50% = Percentage of male remaining on bus.

100% - 50% = 50% Females.

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