Krutika and Natasha are marking exam papers. Each set takes Krutika 72 minutes and Natasha 1 hour. Express the times Krutika and Natasha take as a ratio. Give your answer in its simplest form.

6 : 5

Step-by-step explanation:

Each set takes Krutika 72 minutes.

Each set takes Natasha 1 hour.

Let us convert that to minutes:

1 hour = 60 minutes

Therefore, expressing the times it takes Krutika and Natasha as a ratio:

72 : 60

Divide by 6

12 : 10

Divide by 2

6 : 5

The ratio is 6 : 5