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A aeroplane covers a certain distance at a speed of 280 km/h in $$4\frac{3}{4}$$ hours. To cover the same distance in 7 hours, it must travel at a speed (in km/h) of:
Speed = 280 km/hr
Time =$$\frac{19}{4\ }$$ hrs
As we know,
Distance = Speed $$\times\ $$ Time
$$280\times\ \frac{19}{4}=1330\ km\ $$
To Cover 1330 km in 7 hr, The speed will be
$$\frac{Distance}{time}=\frac{1330}{7}\ =190\ \frac{km}{hr}\ $$
Hence, Option B is correct.
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