Question

I need the answer to these math questions.

1) Multiply 16 minutes 21 seconds by 31.

2) Divide 537 minutes 20 seconds by 31.

3) Divide 999 hours 45 minutes by 43.

Round the final answer to the nearest hundredth as necessary.

Answer 1

1) 506.85 minutes

2) 17.33 minutes

3) 23.25 hours

Explanation:

1) 16 minutes and 21 seconds

`21\ seconds=(21)/(60)\\=0.35\ minutes`

16 minutes and 21 seconds=16.35 minutes

Multiply by 31

`\therefore 16.35* 31=506.85\ minutes`

2) 537 minutes 20 seconds

`20\ seconds=(20)/(60)\\=0.33\ minutes`

537 minutes 20 seconds=537.33 minutes

Divide by 31

`\therefore 537.33/ 31=17.33\ minutes`

3) 999 hours 45 minutes

`45\ minutes=(45)/(60)\\=0.75\ hours`

999 hours 45 minutes=999.75 hours

`\therefore 999.75/ 43=23.25\ hours`