Each friend spent $50 (50+50+50= 150)
Sarah spent twice as much as them150*2=300
altogether they spent $150+$300= $450
(just edited sorry for previous mistake)
So, the equation to solve then is: 0.3 x=100
Solving for x, we get x=100 /0.3
or x, we get x=333.333333
This means, 100 is 30 % of 333.333333
0.08 kilometers per minute.
Just do 4/50 and you’ll get the answer.
YOUR ANSWER IS A
HOPE THIS HELPS
P=44.6
P=a+b+√a^2+b^2=11+15+√11^2+15^2≈44.6