MathsFormula
Junior Member
- Joined
- Jul 13, 2014
- Messages
- 94
The question is:
Lady makes 30 cakes every hour.
How long does it take her to make 220 cakes?
Give your answer in hours and minutes.
Answer in book is 7 hours and 10 minutes
I think this is incorrect. I think the answer should be 1 hour and 19 mins
My calculation:
220/30 = time to make 30 cakes = 7.33 hours. 0.33 hours is 19 mins [0.33 x 60 mins]
So my answer is 7 hours and 19 mins.
Please advise if I'm wrong and why. Thank you.
Lady makes 30 cakes every hour.
How long does it take her to make 220 cakes?
Give your answer in hours and minutes.
Answer in book is 7 hours and 10 minutes
I think this is incorrect. I think the answer should be 1 hour and 19 mins
My calculation:
220/30 = time to make 30 cakes = 7.33 hours. 0.33 hours is 19 mins [0.33 x 60 mins]
So my answer is 7 hours and 19 mins.
Please advise if I'm wrong and why. Thank you.