As a holiday project, class teacher gave the task to sale some books for charitable cause. 2 boys and 7
girls of section A can sale 100 books in 4 days while 4 boys and 4 girls of section B together can sale the
same number of books in 3 days.
Teachoo Black gives you a clean, uninterrupted study experience on every page.
Go ad-free →No banners. No interruptions. Just the lesson.
Go ad-free →