the number of boys in a sports club increased by 35%.

Question

0

790

2

+31

the number of boys in a sports club increased by 35%.

the number of girls in the club has decreased by 10%.

now there is an equal number of boys and girls.

what was the original boy:girl ratio?

can someone please tell me the answer and how they got it.

oddbox Aug 21, 2016

oddbox · Answer 1 · 2016-08-21T01:56:40

someone please help

MaxWong · Answer 2 · 2016-08-21T02:04:03

Look at your first post.

If you like it I can copy it here.

\((1+35\%)b=(1-10\%)g\\ \dfrac{b}{g}=\dfrac{(1-10\%)}{(1+35\%)}=\dfrac{0.9}{1.35}=\dfrac{2}{3}\\ \therefore b:g = 2:3\)