Both Party A and Party B go from place a to place B. Party A walks 5km per hour, 1.5h first, and Party B bicycles for 50min. They arrive at place B at the same time, One is to set X kilometers per hour. Is there another solution? In the second method, the equation should not be set at the speed of X kilometers per hour

Arithmetic:
50 minutes = 5 / 6 hours
(1.5+5/6)x5÷5/6
=35/3÷5/6
=14 (km / h)
Equation method
If B is faster than a by X km / h, the following results can be obtained:
5x/6=5X1.5
x=7.5X6/5
x=9
The speed of B is: 5 + 9 = 14 (km / h)

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