GWD 03-21

[william0904]

The ratio of the number of boys to the number of girls in a certain school club is 3:4. If there are 5 more girls than boys in the club, how many girls are in the club?

a.7
b.8
c.12
d.15
e.20

ANS:E

Help me please

[crazykai]

設男生為X人

X : X+5 = 3 : 4

3(X+5) = 4X

X = 15

女生 15+ 5 =20

[william0904]

謝謝