1) 2500
3) 450
5) 98.7
7) 4200
Yes you have to order them by their name
So, Jemma gave away 0.30 percent and also gave 0.25 away all we have to do is add these two percents and we have our answer!
0.30% + 0.25% =
0.30 plus 0.25 equals to 0.0055 so you get your answer 0.0055!
You simply try put the whole example in an equation form.
vc= velocity of car
vp= velocity of the plane
know it is given that the time of both travels is the same, and using the famous velocity time equation you can say,
t=(distance by the car/vc)=(distance by the plane/vp)
so
(150/vc)=(600/vp)
Now, given that vp=150+vc
We have;
(150/vc)=(600/150+vc)
multiply and you get an equality of
150(150+vc)=600vc
150^2+150vc=600vc
make all vc at one side, you have;
150^2=600vc-150vc
then; vc=150^2/450=50
and use the vp=150+vc equation again and you get,
vc=200mph.
Hope this helps.