Math asap a train travels 100 km in the same the plane covers 350km. if the speed of the plane is 20 km per less than 4 times the speed of the train, find both speeds.; train speed? ; planes speed?

R=train speed
p=plaane speed
t=time
d=st

100=tr
350=pt
p=4r-20

ok so 100 times 3.5=350
times 1st equaton by 3.5
350=3.5tr
350=pt
sub
3.5tr=pt
divide both sides by t
3.5r=p
sub p=4r-20
3.5r=4r-20
minus 3.4 from both sides
0=0.5r-20
add 20
20=0.5r
times 2
40=r
sub
p=4r-20
p=4(40)-20
p=160-20
p=140

plane=140kmph
train=40kmph

the value of x is 9

Step-by-step explanation:

Tangent chord angle = half of intercepted arc

4x+19 = half of minor arc DE

Multiply by 2 on both sides

minor arc DE= 2(4x+19)= 8x + 38

sum of angle in a circle is 360 degree

minor arc DE + major arc DE = 360

Subtract 36 from both sides

Divide both sides by 36

x=9