Question

If the ratio of students packing a lunch to those buying lunch is 2:9, then the number of students buying lunch is ______ times the number of students packing a lunch.

Answer 1

9÷2=4.5

the number of students buying lunch is 4.5 times the number of students packing a lunch

Answer 2

4.5 times

Explanation:

Given : The ratio of students packing a lunch to those buying lunch is 2:9

To Find : The number of students buying lunch is ______ times the number of students packing a lunch.

Solution :

let x denotes the no. of students packing a lunch

let y denotes the no. of students buying a lunch

Since the ratio is 2:9

⇒
`(2)/(9) = (x)/(y)`

⇒
`2y = 9x`

⇒
`y = (9)/(2) x`

⇒
`y =4.5 x`

Since y denotes the no. of students buying a lunch and x denotes the no. of students packing a lunch

Thus , The number of students buying lunch is 4.5 times the number of students packing a lunch.