Posted by Student56 on Sunday, October 7, 2012 at 6:02am.
Start off by figuring out 40% (percent means you take 40 and divide it by 100) of ("of" means multiply) 175.
So
(40/100) x 75 = ?
That will tell you how many boys there are now.
Next, figure out how many girls there are now. (How many are left over?)
Add 25 to the girls' number (since 25 girls just walked in). Add 25 to 175 people (since 25 people just walked in).
"New number of girls" divided by "new number of people" gives you the percentage. (It will be higher than 60%, just as a control of error).
Related Questions
maths - There ere 258 pupils in hte hall.If 1/3 of the boys left the hall and 22...
Maths - A moment ago, 80% of the children in a hall were girls. 48 girls and 2 ...
maths P5 - There were 335 children in a hall. 1/4 of the girls and 2/5 of the ...
maths - There were 335 children in a hall. 1/4 of the girls and 2/5 of the boys ...
Maths - There are 40 pupils in a class. There are 10 more boys than girls. When ...
Maths - A school has 1800 pupils. 55% of the pupils are girls. 30% of the girls ...
p6maths(non-algebra) - There were 1000 students at the parade ground and indoor ...
maths - THE AREA OF 4 WALLS OF A HALL IS 3.20MSq the length and breabth of hall ...
Math - it says the knights banquet hall uses the equation 25n-c+1250=0 determine...
Maths Percentage - 2/5 of the children in an art club were girls. 1/4 of the ...
For Further Reading
