Question

В один из дней зимних каникул мальчик 2 3/5ч. катался на лыжах,а на конькахна 1 4/5ч.меньше.Сколько всего времени он катался на лыжах и коньках?

Answer 1

13/5-9/5=4/5  катался на коньках
13/5+4/5=17/5=3,4 часа = 3 часа 24 минуты

Answer 2

Calculation of Time Spent on Skis and Skates

To calculate the total time the boy spent on skis and skates, we need to add the time he spent on each activity.

The boy spent 2 3/5 hours on skis and 1 4/5 hours less on skates.

Let's calculate the total time:

Time spent on skis: 2 3/5 hours

Time spent on skates: 2 3/5 hours - 1 4/5 hours

To subtract fractions, we need to find a common denominator. In this case, the common denominator is 5.

Converting the fractions to have a common denominator:

Time spent on skates: 2 3/5 hours - 1 4/5 hours = 2 3/5 hours - 1 4/5 hours = 2 3/5 hours - 1 1/5 hours

Now, let's subtract the fractions:

Time spent on skates: 2 3/5 hours - 1 1/5 hours = (2 - 1) + (3/5 - 1/5) hours = 1 + 2/5 hours = 1 2/5 hours

Therefore, the boy spent 1 2/5 hours on skates.

To find the total time spent on skis and skates, we add the time spent on each activity:

Total time spent on skis and skates: 2 3/5 hours + 1 2/5 hours

Adding the fractions:

Total time spent on skis and skates: 2 3/5 hours + 1 2/5 hours = (2 + 1) + (3/5 + 2/5) hours = 3 + 5/5 hours = 3 1/5 hours

Therefore, the boy spent a total of 3 1/5 hours on skis and skates.

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