Question

Lin spends 4 1/3 hours per week practicing piano. He also spends 1 2/3hours per week doing chores.How many more minutes does Lin spend practicing piano than doing chores each week?

A) 40 minutes
B) 50 minutes
C) 60 minutes
D) 70 minutes

Answer 1

Lin spends 4 1/3 hours per week practicing piano and 1 2/3 hours per week doing chores. The difference in time between Lin's piano practice and chores is 53 1/3 minutes. Therefore, Lin spends 53 1/3 minutes more practicing piano than doing chores each week.

Step-by-step explanation:

To find the difference in time between Lin's piano practice and chores, we need to convert the times to a common unit. Lin spends 4 1/3 hours per week practicing piano and 1 2/3 hours per week doing chores. We can convert these mixed numbers into improper fractions as follows:

Piano practice: 4 1/3 hours = (4*3 + 1)/3 = 13/3 hours

Chores: 1 2/3 hours = (1*3 + 2)/3 = 5/3 hours

Now, we can subtract the time spent doing chores from the time spent practicing piano:

Difference = 13/3 - 5/3 = 8/3 hours.

To convert this to minutes, we can multiply the difference by 60:

Difference in minutes = (8/3) * 60 = 160/3 minutes.

Simplifying the fraction, we get:

Difference in minutes = 53 1/3 minutes.

Therefore, Lin spends 53 1/3 minutes more practicing piano than doing chores each week, which can be rounded to the nearest whole number. So the correct answer is C) 60 minutes.