20 men can make a road for 50 km in 10 days in hown many days can 15 men make a road for 7km

1.87 days

Step-by-step explanation:

If it takes 20 men can make a road for 50 km in 10 days, by the unitary method,  1 man can make 50 km/20 in 10 days.

So 1 man can make 2.5 km in 10 days.

We then calculate for 15 men by multiplying the expression by 15

So, for 15 men, 15 × 1 man can make 2.5 km × 15 in 10 days/

So, 15 men can make 37.5 km in 10 days.

Since 15 men can make 37.5 km in 10 days, 15 men will make 1 km in 10/37.5 days.

So multiplying by 7,

15 men will make 7 × 1 km in 7 × 10/37.5 days

Thus 15 men will make 7 km in 1.87 days

the red lines denote the population of the bacteria after 35 hours. that would be 2,409.24. the y-intercept is the blue line which is 800 because that is the starting point. the equation used to make the graph is 800(1.032)^h, where h is the number of hours.

step-by-step explanation: