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Party A and Party B travel from two places 27 kilometers apart and meet two hours later. If it is known that Party B's speed is 5.5 km / h faster than Party A's speed, then Party B's speed is____ Km / h
Party A and Party B travel from two places 27 kilometers apart,
We met two hours later. It is known that the speed of B is 5.5 km / h faster than that of A,
Then the velocity of B is__ 9.5__ Km / h
(27 △ 2 + 5.5) △ 2 = 9.5 (km / h)
A and B start from two places 60 kilometers apart and walk towards each other. A walks at a speed of 5 km / h, and B rides a bicycle. Three hours later, the two meet to find the speed of B. If a and B walk in the same direction at the same time, a is in the front and B is in the back, then after a few hours, B catches up with a?
Solve by equation
1.
B. speed per hour:
60 △ 3-5 = 15 km
Let B speed be x km / h
(5+x)*3=60
5+x=20
x=15
two
B needs to catch up with a:
60 ÷ (15-5) = 6 hours
It takes y hours for B to catch up with a
y(15-5)=60
10y=60
y=6
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