Question

Решите задачу. Я решила, но сомневаюсь При ремонте дома нужно покрасить 150 рам. Один маляр может это сделать за 15 дней, а другой - за 10 дней. За сколько дней маляры смогут выполнить задание, работая вместе?

Answer 1

150:15=10 рам в день красит один маляр150:10=15 рам в день красит другой маляр10+15=25 рам в день красят оба маляра вместе150:25=6 дней уйдет на выполнение задания работая вместепри этом один маляр покрасит 15*6=90 рам за 6 дней, а другой 10*6=60 рам.

Answer 2

150:15=10 рам в день красит первый маляр
150:10=15 рам в день красит второй маляр
10+15=25 рам в день будут красить два маляра
150:25=6 дней понадобится двоим малярам чтобы покрасить все рамы 

Answer 3

Problem Analysis

To solve this problem, we need to determine how many days it will take for two painters to complete the task of painting 150 frames. One painter can complete the task in 15 days, while the other can complete it in 10 days. We need to find the number of days it will take for both painters to complete the task working together.

Solution

Let's calculate the work rate of each painter first. The work rate is defined as the number of frames painted per day.

Painter 1 can paint 1/15th of the frames per day, and Painter 2 can paint 1/10th of the frames per day.

When working together, their combined work rate is the sum of their individual work rates:

Painter 1's work rate + Painter 2's work rate = 1/15 + 1/10 = 2/30 + 3/30 = 5/30 = 1/6

Therefore, when working together, they can paint 1/6th of the frames per day.

To find the number of days it will take for them to complete the task, we divide the total number of frames (150) by their combined work rate (1/6):

Number of days = Total number of frames / Combined work rate = 150 / (1/6) = 150 * 6 = 900

It will take the two painters 900 days to complete the task working together.

Answer

The two painters will be able to complete the task of painting 150 frames in 900 days when working together.