Of the 240 students eating lunch, 96 purchased their lunch and the rest brought a bag lunch. What is the ratio of students purchasing lunch to students bringing a bag lunch?

1 Answer
May 18, 2018

Answer:

#2" ":" "3#

Explanation:

The number of students who bring a bag lunch = #240-96 = 144#

A ratio is a comparison between the two quantities.

#" students who purchase ":" students who bring"#

#color(white)(xxxxxxxxxxxxxx)96" ":" "144" "larr# find simplest form

#color(white)(xxxxxxxxxxxxxxx)8" ":" "12" "larr div 12#

#color(white)(xxxxxxxxxxxxxxx)2" ":" "3" "larr div 4#

If you had recognised that the #HCF# was #48# you could get the the simplest form immediately. If not, divide by any common factors.