10 dived by 3 is 3.3 rep. then you multiply by 90 just show your steps divsion and mult. so when represting 3.3 rep. all you do is a bar notation above the first 3 and it explaines its self. i hope i could help
Say that taking a quarter of student out of the group will add a quarter present of days for food so by take 20 students out you’ll get 60 days (that’s what I got hope this helps)
