Three boys were running around the track. The first can run 1 lap in 15 min. The second can run 1 lap in 25 min. and the third c
1 answer:
Answer:
At 15:15
Step-by-step explanation:
Given,
the 1st boy can run a lap in 15 minutes
the 2nd boy can run a lap in 25 minutes
the 3rd boy can run a lap in 10 minutes
Now if they start running at 12:45,they will meet after the time which will be equal to the L.C.M. of their time need to run a lap.
of 15,25 & 10 = 150
So,they will pass each other after 150 minutes or 2 hours & 30 minutes.
If we add it with 12:45 we'll get 15:15 or 3:15 pm
You might be interested in
Answer:
Part 1) The graph in the attached figure
Part 2) Three points that solve the equation could be (-18,0),(0,4.5) and (-2,4)
Step-by-step explanation:
we know that
To graph a line we need to plot two points
If a point solve the linear equation, then the point is a solution of the linear equation
step 1
Find the first point that solve the equation
<em>Find the x-intercept</em>
The x-intercept is the value of x when the value of y is equal to zero
For y=0
The x-intercept is the point (-18,0)
step 2
Find the second point that solve the equation
<em>Find the y-intercept</em>
The y-intercept is the value of y when the value of x is equal to zero
For x=0
The y-intercept is the point (0,4.5)
step 3
With the intercepts graph the line
Plot the intercepts and join the points to graph the line
using a graphing tool
see the attached figure
step 4
Find the third point that solve the equation
Assume a value for x and then solve for y
I assume x=-2
substitute in the linear equation and solve for y
The third point is the point (-2,4)
