Question

This assignment has an incorrect answer. Jonás practices guitar 1 hr (60 min) for 2 years (730) so means 730 x 60 = 43,800 Jonás total hrs, not 21,900 (this will be only 1 year). Bradley also practices for 2 years but 2 more hrs a day than Jonas, so Bradley practices 3 hrs. (180 min) 730x60 = 131,400 min. So Bradley 131,400 - Jonas 43,800 = 87,600; this is the answer, not 109,500, isn’t it?

Answer 1

To calculate the time difference in practice between Jonas and Bradley over two years, we find that Jonas practices 730 hours and Bradley 2,190 hours. The difference is 1,460 hours or 87,600 minutes when converted.

Step-by-step explanation:

The student's question concerns the calculation of the difference in practice time between two individuals, Jonas and Bradley, over a period of two years. To resolve this, we need to calculate the total practice time for each individual and then find the difference. Jonas practices 1 hour a day, so over two years (730 days), his practice time is 730 hours. Bradley practices 3 hours a day, so his practice time over two years is 3 x 730 hours, which equals 2,190 hours. The difference between Bradley's and Jonas's practice times is 2,190 - 730 hours, which equals 1,460 hours, not 87,600 minutes or 109,500 minutes. If we convert 1,460 hours to minutes by multiplying by 60, it would be 87,600 minutes. However, these are not the correct numbers based on the original calculation that was presented in the question.