Question

please give the answer of this question ​

Answer 1

Answer:

25*4-30*10=100-300=200km

Answer 2

Let the distance be x and time in minutes be t

speed=25km/hr

=25km/60min

=5km/12min

and

30km/hr

=1km/min

so,

x/(5/12)=4+t

12x/5 - 4=t------------------1

and

x/(1/2)=t-10

2x+10=t-------------------------2

from 1 and 2

12x/5-4=2x+10

12x/5 - 2x=14

2x/5=14

x=35km

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