The Grayson family got a new backyard swimming pool. When they tell their friends how much water it holds, they round the number
1 answer:
You might be interested in
Answer:
Malcom's maximum speed = 200 km/h
Ravi's maximum speed = 320 km/h
Step-by-step explanation:
Let m = Malcom's maximum speed
Let r = Ravi's maximum speed
Average of their maximum speed would be represented as
.
Make m the subject of the formula by subtracting r from both sides:
. Let this be equation 1.
Given that Malcom's speed (m), when doubled is 80 km/h more than that of Ravi (r). This can be expressed as: . This is equation 2.
Plug in (520 - r) into equation 2 to replace m:
Solve for r. Subtract 1040 from both sides:
Subtract r from both sides
Divide both sides by -3
To find m, plug in the value of r into equation 1.
. =>Equation 1
.
Malcom's maximum speed = m = 200 km/h
Ravi's maximum speed = r = 320 km/h