Question

Маляр красит 3 метра забора за 1 час. Сколько дней ему нужно, чтобы покрасить забор длиной в 1200 метров, если он будет красить забор по 5 часов в день.

Answer 1

1)1200:3=400
2)400:5=80
ответ:80 дней

Answer 2

Calculating Time to Paint a Fence

To calculate the time needed to paint a fence, we can use the given information that the painter can paint 3 meters of the fence in 1 hour and will work 5 hours a day.

Given: - Painting speed: 3 meters per hour - Daily working hours: 5 hours

We can calculate the time needed to paint the entire fence.

Calculation

To find the total time needed to paint a 1200-meter fence: 1. Calculate the time needed to paint 1 meter of the fence: - 1 meter / 3 meters per hour = 1/3 hours 2. Calculate the time needed to paint the entire 1200-meter fence: - (1/3 hours per meter) * 1200 meters = 400 hours

So, the painter would need 400 hours to paint the entire 1200-meter fence.

Conclusion

If the painter works 5 hours a day, the total number of days needed to paint the fence can be calculated by dividing the total hours by the daily working hours: - 400 hours / 5 hours per day = 80 days

Therefore, it would take the painter 80 days to paint the 1200-meter fence, working 5 hours a day.