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A car from a to B, the first hour of the whole line 25%, the second hour of the whole line 30%, 270 kilometers away from B How many kilometers is the total length of a and B?
270÷[1-(25%+30 %)]
=270÷（1-55%)
=270÷45%
=600 (km)
A: the total length of a and B is 600 kilometers
A car traveled 35% of the whole journey in the first hour and 25% of the whole journey in the second hour. In these two hours, it traveled a total of 162 kilometers
How many meters is it from a to B?
162÷(35%+25%)
=162÷0.6
=270km
It's 270 kilometers from place a to place B
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