Question

please help me in doing match please OK

Answer 1

$distance \: d = 240 \\ \\total \: time \: taken \: \: t = 4 \frac{1}{4} = \frac{17}{4}\: h\\ \\ let \: x \:part \:of \:distance \:is \:covered \: by \: him \:at \:the \:rate \:of \: 60 \:km \:per \: h \\ \\therefore \:time\:taken \:in \:this \:situation \: \\ \\= \frac{x}{60} h$

240-x part of distance is covered in 45km/h

time taken
$= \frac{240 - x}{45} h$
therefore

$\frac{17}{4} = \frac{x}{60} + \frac{240 - x}{45} \\ \\ \\ \frac{17}{4} = \frac{3x + 96 0 - 4x}{180 } \\ \\ \frac{17 \times 180}{4} = 960 - x \\ \\ 765 - 960 = - x \\ \\ - 195 = - x \\ \\ x = 195km$

Answer 2

Ajay covers a distance of 240 km in 4 1/4 hours . some part of journey was covered at the speed of 45km/h and the remaining at 60km/h find the distance covered by him at the rate of 60km/h


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