Question

express in simplest form
1 ) 1.8:7.2
2) 5 min: 112 hours​

Answer 1

first answer

1.8 / 7.2

18×10/72×10

18/72

1/4

second answer

5min / 112 hours

5×60 / 112 × 60×60

300/ 112×3600

1/1344