Question 950977: In a class of 20 students, 40% are boys. Twenty-five percent of the boys and 50% of the girls wear glasses. How many students wear glasses?
Answer by jim_thompson5910(35256)   (Show Source):
You can put this solution on YOUR website! "In a class of 20 students, 40% are boys."
So there are 20*0.4 = 8 boys
There are 20-8 = 12 girls.
-------------------------------------------------------
" Twenty-five percent of the boys and 50% of the girls wear glasses"
0.25*8 = 2 boys wear glasses
0.5*12 = 6 girls wear glasses
2+6 = 8 students wear glasses.
------------------------------------------------------------------------------------------------------------------------
If you need more one-on-one help, email me at jim_thompson5910@hotmail.com. You can ask me a few more questions for free, but afterwards, I would charge you ($2 a problem to have steps shown or $1 a problem for answer only).
Alternatively, please consider visiting my website: http://www.freewebs.com/jimthompson5910/home.html and making a donation. Any amount is greatly appreciated as it helps me a lot. This donation is to support free tutoring. Thank you.
Jim
------------------------------------------------------------------------------------------------------------------------
|
|
|
