(1/2) / (1 + 2/3) = (4) / (B ) simplify
(1/2) / ( 5/3) = 4 /(B) cross-multiply
B(1/2) = (5/3)(4)
B(1/2) = 20/3 multiply both sides by 2
B = 40/3 cups of B = 13 + 1/3 cups of B
Answer:70x
Step-by-step explanation: FIND BY OWN
Answer: the speed of the plane in still air is 135 km/h
the speed of the wind is 23 km/h
Step-by-step explanation:
Let x represent the speed of the plane in still air.
Let y represent the speed of the wind.
Flying to England with a tailwind a plane averaged 158km/h. This means that the total speed of the plane is (x + y) km/h. Therefore,
x + y = 158 - - - - - - - - - - - - - -1
On the return trip, the plane only averaged 112 km/h while flying back in the same wind. This means that the total speed of the plane is (x - y) km/h. Therefore,
x - y = 112 - - - - - - - - - - - - - -2
Adding equation 1 to equation 2, it becomes
2x = 270
x = 270/2 = 135 km/h
Substituting x = 135 into equation 2, it becomes
135 - y = 112
y = 135 - 112
y = 23 km/h
12 Step-by-step explanation:cause 6x2 = 12
Answer:
1/9 is probably most likely the correct answer